Ville Koski Scouting Report: A Five-Year Bet on a Seven-Game Sample

Quick Answer

Ville Koski’s file poses the hardest question in scouting: how confident can you be on very little evidence? The Finnish centre-back has played only seven La Liga matches for Deportivo Alavés — and yet the club made his move permanent in June 2026 and tied him down until 2031. Alavés effectively placed a five-year bet on a seven-game sample. Koski is a defender who leaves the line rather than holding it: he prefers to step out and engage before the striker can settle on the ball, he is aggressive in duels, and he concentrates well inside his own box. At 1.85 m he is adequate rather than dominant in the air, and his ball progression is not yet at the level La Liga’s better centre-backs operate on. His strongest evidence is the kind that does not appear in a data table: on 13 May 2026 he made his first league start against Barcelona, and Alavés kept a clean sheet for the first time in 21 matches. For a Süper Lig or mid-tier European buyer the role is clear — right-sided or central defender in a back three or four, ideally with a ball-carrying holding midfielder in front of him. The value case is genuinely attractive because his price band is still low. The caution is equally real: seven top-flight matches, a December 2025 knee operation, and open competition with Nicolás Valentini for the same shirt. This is not a sign-now file. It is a watch-closely development file.

Player Card

Career and Transfer History

Season Statistics (2025-26 and start of 2026-27)

The La Liga figures here come from the overlap between FotMob and LaLiga’s official player page; the 2026-27 defensive numbers are taken from FútbolFantasy’s matchday breakdowns. The sample is small, and no per-90 rate has been generalised anywhere in this report: extrapolating “per match” figures from 281 minutes of a half-season and 169 minutes of a new campaign would be statistically misleading. Koski’s largest reliable data pool remains his 64 league appearances in Croatia; the La Liga assessment in this report rests on match observation and context rather than rate statistics.

Who is he? From Tuusula to Pula, and from Pula to Vitoria-Gasteiz

Ville Aleksi Jukanpoika Koski was born on 27 January 2002 in Tuusula, a municipality of around thirty-five thousand people north of Helsinki. It is not a place with a tradition of exporting players to Europe’s leading leagues. He turned professional at sixteen with third-tier PK Keski-Uusimaa and made his senior debut on 13 May 2018.

The formative years came at FC Honka in Espoo. First 27 appearances for Honka Akatemia, then a Veikkausliiga debut on 12 September 2020. He made 67 appearances and scored 4 goals for Honka, won the Finnish League Cup in 2022 and finished as a Finnish Cup runner-up in 2023. In the same period he captained Finland’s under-21 side across 31 caps and was named the Football Association of Finland’s U21 Player of the Year in 2024. His senior debut came on 12 January 2023 against Estonia; he now has 11 caps.

In December 2023 he signed the contract that redirected his career: a three-and-a-half-year deal with Croatian top-flight club NK Istra 1961, effective from January 2024. He played regularly in Pula for two years, making 64 league appearances. Those two seasons remain his broadest and most reliable body of evidence.

The context behind the move: the Baskonia-Alavés group and NK Istra 1961

One corporate detail explains most of how Koski reached Spain. In 2018 the Baskonia-Alavés Group bought 85 per cent of NK Istra 1961 in Pula and absorbed the Croatian club’s debt. The club that loaned Koski out and the club that took him in belonged to the same ownership structure.

That changes how the transfer should be read. When Alavés took him on loan on 31 January 2026, this was not a negotiation between rivals; it was an internal move, and the purchase option was always likely to be triggered. Finnish coverage during the season noted exactly that: the option was expected to be exercised because both clubs share an owner.

Two scouting conclusions follow. First, the fee paid tells you very little about his market worth — it is an intra-group accounting movement. Spanish outlets reported roughly €400,000, some databases carry considerably higher figures, and the club never published an official number. Second, Koski did not arrive in La Liga by winning a competitive recruitment race; he arrived through his own group’s feeder pipeline. That does not diminish his ability, but it does mean the sentence “La Liga clubs discovered this player” is not yet true. For clubs outside the group, the evidence still has to be produced on the pitch.

Local reporting that summer suggested offers of around €2m arrived from elsewhere in Europe and that Koski chose to stay in Vitoria-Gasteiz. The club has not confirmed this, and it should be treated as a local-press claim rather than established fact.

13 May 2026: the night a twenty-one-match bleed stopped

One match outweighs everything else in Koski’s Alavés file. Late in the season, Alavés had conceded in 21 consecutive matches since Quique Sánchez Flores took charge. On 13 May 2026 at Mendizorroza, against Barcelona, Koski started a league game for the first time — an unexpected call for a player only recently back from meniscus surgery who until then had only appeared off the bench. Alavés won 1-0 and the streak ended that night.

The logic was straightforward. The coaching staff had been short of natural centre-backs for months, filling the middle of a back five with converted full-backs. Putting Koski in pushed Jonny Otto to the bench and gave the defence a genuine central defender for the first time. Local reporting described him as looking secure from start to finish despite the tension and the stakes.

The following match against Oviedo was also won 1-0 and confirmed survival, with Koski starting for a second consecutive game. Alavés finished 14th on 43 points. His total contribution was five appearances and 281 minutes — but those minutes fell in the season’s most decisive weeks. A scouting report should treat “few minutes” and “weight of minutes” as separate lines; Koski’s file is exactly that distinction in practice.

Playing style: a defender who leaves the line

The first repeated behaviour you notice is his willingness to step out of the defensive line. He would rather close the distance before an opponent can turn than wait and hold shape. In a back five, the central defender is more often asked to hold position and protect space; Koski leans distinctly towards the proactive side of that trade-off.

The second is concentration inside his own penalty area. What stood out against Barcelona and Oviedo was not spectacular last-ditch defending but a consistent presence wherever second balls dropped. Eight effective clearances in the first 169 minutes of 2026-27 is the numerical trace of that habit: when the ball enters the box, he takes responsibility for getting it out.

The third is communication. Finnish coverage reported that what surprised the Spanish press most was how poorly he fitted the stereotype of the quiet, introverted Finn — he is described as talkative in the dressing room and vocal on the pitch. For a 24-year-old organising a defence in a language he is still learning, that may matter more than any technical attribute. This is press assessment rather than direct observation and should be weighted accordingly.

The weakness is ball progression. His distribution is functional but not incisive: line-breaking vertical passes and clean first passes under pressure are not yet above La Liga’s mid-band. Alavés’s game model currently conceals this, because the side defends space and plays transitions rather than seeking possession. Move him into a possession-based system and the gap becomes visible quickly.

The opening two matchdays of 2026-27: one good, one contested

The new season opened with a clear message about hierarchy: he started both games. The content of those two games, however, was not the same.

Matchday 1 — 15 August 2026, Alavés 3-0 Getafe. Koski played the full ninety and earned a 6.90 rating. He was part of the central defence in the 3-5-2, and the side kept a clean sheet. Getafe’s red card in the 42nd minute distorted the contest, so the difficulty coefficient of the performance should be read as low.

Matchday 2 — 20 August 2026, Rayo Vallecano 1-1 Alavés. This is the cautionary half of the file. Koski was involved in the sequence leading to Rayo’s goal through a mistimed challenge on Camello near the box, and looked hesitant in phases. He came off with cramp. Local reporting judged that Nicolás Valentini, his replacement, looked more secure and clearer in the air across 18 minutes.

The picture from the two games is that Koski begins the season as the team’s natural centre-back but has not secured the shirt. For a scout that is an ideal balance: the player is getting regular minutes while under pressure.

The Valentini competition: the pecking order is not settled

On 7 August 2026 Alavés signed Nicolás Valentini from Fiorentina on a contract until 2029. Before that, Koski was the only natural centre-back Quique Sánchez Flores had available, and full-backs were being converted to make the 5-3-2 work. Valentini’s arrival changed both squad depth and Koski’s standing.

Local analysis published on 27 August 2026 described the two as being in direct competition for the middle of the defence. Valentini is left-footed and more comfortable progressing the ball; Koski is right-footed with a duel-first profile. They do not have to be mutually exclusive — they can play alongside each other in a back three — but once Facundo Garcés is available again, the central area becomes a three-way contest and rotation becomes unavoidable.

Our Nicolás Valentini scouting report and Jonny Otto scouting report cover the other two sides of that competition in detail.

Injuries and availability

Koski’s medical file is short, but two entries deserve attention.

Knee meniscus surgery (December 2025 – March 2026). He was still recovering when he arrived on loan, which is why his La Liga debut did not come until 13 March 2026. The return went smoothly and he was in the starting XI within two months — a positive signal about the rehabilitation. Even so, a meniscus issue in a position with high jumping and change-of-direction load warrants long-term monitoring.

Head trauma (July – August 2026). Suffered in pre-season. It did not keep him out of the opening fixtures, but it did cost him preparation time. The cramp on matchday 2 may be a downstream effect of that interrupted pre-season.

Taken together this is not the profile of a fragile player: he made 64 league appearances across two seasons at Istra and showed he can play continuously. But the last twelve months contain two interruptions, and the next twelve deserve close attention.

The sample problem: what can seven La Liga matches actually tell you?

This is the most honest section of the report. Koski’s total La Liga output is 5 + 2 = 7 matches and roughly 450 minutes. At that volume no per-90 rate is meaningful, and writing “x clearances per match” would be statistically irresponsible.

Three things can still be said. First, there is a signal that he clears the quality threshold: starting ninety minutes against Barcelona and keeping a clean sheet with a bottom-half side is not the sort of output you explain away as coincidence. Second, the coaching staff and the board have already made their call — a five-year contract plus a place in the opening XI suggests the internal view is more positive than the external one. Third, the Rayo error and Valentini’s arrival are a reminder that this positive read is not yet beyond challenge.

Finnish media have noted that Koski could pass Jari Litmanen’s record for La Liga appearances by a Finnish player (21) this season. That statistic says less about his quality than about how rare it is for a Finnish defender to play regularly in Spain’s top division; he is described as the first Finnish centre-back since Niklas Moisander to hold a genuine starting role in one of Europe’s top five leagues.

Would he suit the Turkish Süper Lig?

Short answer: yes in role terms, but not today, and only at the right price and in the right system.

The Süper Lig’s physical tempo and the volume of crosses arriving into the box line up well with Koski’s strongest areas — box defending, duels and second balls. Across much of the league, attacks are still built through wide areas and centre-backs are asked to defend space and win aerial contests. Koski fits that demand.

The risks fall into two headings. First, the standard of ball progression expected from Turkish centre-backs has risen sharply in recent years, with most upper and mid-upper clubs attempting to build from the back. Koski does not yet separate himself there. Second, the emotional intensity of the league and its away atmospheres represent a genuine test for a player arriving from the Veikkausliiga and the Croatian top flight, two of Europe’s calmer environments.

On that second risk there is one encouraging data point: he made his first league start at Mendizorroza against Barcelona in the most pressurised week of a relegation fight and did not come apart. Despite the narrow sample, the adaptation file reads positively.

What kind of club profile fits him?

Defining a profile is more useful than naming clubs, since squad needs change every window.

Good fit: upper-mid or mid-table sides that use — or want to use — a back three or five, that have a ball-carrying holding midfielder in front of the defence, and that primarily want their centre-back to defend. In that structure, his tendency to step out becomes part of the system rather than a risk.

Poor fit: possession-heavy sides with a high line that expect their centre-backs to break lines with the ball and dictate build-up. In that system he is currently a second option.

Squad role: “candidate for the XI, not guaranteed” is the correct designation for a first season. Declaring a 24-year-old on a rising development curve undroppable is a premature bet for both the club and the player.

Ideal team-mates and formation

3-5-2 / 5-3-2: the structure he plays in now and the one that suits him best — on the right or in the middle of a back three, flanked by defenders who hold their position more strictly. Whenever he steps out, someone must cover behind him.

4-2-3-1 / 4-3-3: he can play as a right-sided centre-back in a back four. The ideal complement is a left-footed partner who is comfortable progressing the ball — the role Valentini occupies at Alavés.

The holding midfielder in front: the single most important complementary piece. A number six who can drop, take the first pass and share the progression burden covers Koski’s weakest area. At Alavés, Antonio Blanco performs that job.

The wing-back beside him: in a back five, a wing-back with strong recovery discipline is required, otherwise the space behind opens up in exactly the moments Koski steps forward.

Cost, contract and value for money

On paper his value is low: the Transfermarkt record sits around €1.40m. That figure does not describe the real cost of a deal, though — the contract does.

Alavés hold him until 2031. That gives the club complete negotiating leverage: they do not need to sell, they can wait, and they can push the price upward as interest appears. Local reports that offers of around €2m were rejected fit that picture.

The attractive side of the value case is straightforward: a 24-year-old EU citizen with La Liga starts and 11 senior caps sits in a low price band relative to European comparables. The risk is that the La Liga sample stops at seven matches. For an interested club, the rational move is not to bid now but to watch the first half of 2026-27 and reassess once Koski passes twenty appearances.

Foreign player status and work permits

Spain: as a Finnish national he enjoys EU freedom of movement and does not occupy a non-EU slot in La Liga. In squad-planning terms his status is cost-free for Alavés.

Turkey: he would count against the Süper Lig foreign quota. The rule in force for 2026-27 is 10+4: the first ten foreign players registered in the A squad face no age criterion, and if a club registers fourteen foreigners, at least four must be born on or after 1 January 2003. Koski, born 27 January 2002, does not qualify for the young-foreigner allocation and would occupy one of the ten unrestricted slots. That removes him from consideration for clubs specifically looking to fill the young-foreigner quota.

England: a GBE assessment would combine Finland’s FIFA ranking, his senior international appearance ratio and his club’s competition banding. With 11 caps and limited La Liga minutes, an exceptions-panel review looks more likely than automatic qualification. The outcome depends on the coefficients in force at the time of application.

Which leagues suit him?

Suitable now: the lower-mid band of La Liga (his current level), the Süper Lig, the Eredivisie, the Belgian Pro League, the mid-band of Portugal’s Primeira Liga, the lower band of the Bundesliga, and the leading clubs in Croatia, Poland and Czechia.

Possible with development: mid-table La Liga, the lower-mid band of Serie A, the bottom band of the Premier League — conditional on clear progress in ball progression and two full seasons of regular football.

Not suitable now: elite possession sides that defend with a high line and expect their centre-backs to run the build-up phase.

If you are studying this player, read these too

• Nicolás Valentini scouting report — his direct competitor for the centre of the defence
• Jonny Otto scouting report — the utility defender used as a wide centre-back in the back five
• Nahuel Tenaglia scouting report — his partner on the right of the defence
• Antonio Blanco scouting report — the holding midfielder in front of him
• Antonio Sivera scouting report — the goalkeeper behind him

Strengths

• Proactive defending and timing of the step-out — He prefers to close the distance before an opponent can settle on the ball. That is not the behaviour usually asked of a central defender in a back five, and it is his clearest identifying trait.
• Box defending and second balls — Eight effective clearances in the first 169 minutes of 2026-27. Against Barcelona and Oviedo the standout quality was not the spectacular intervention but the consistency of being where the ball dropped.
• Composure under pressure — He made his first league start in the most pressurised week of a relegation fight, against Barcelona, played ninety minutes, and the team kept its first clean sheet in 21 matches. Local reporting rated the display as secure throughout.
• Communication and line management — Spanish media described him as talkative in the dressing room and vocal on the pitch. For a 24-year-old organising a back line in a new language, that may be worth more than a technical attribute. (Press assessment.)
• Proven adaptation — Finland, Croatia and Spain — three football cultures, three languages. He became a regular after each move, including 64 league appearances across two seasons at Istra.
• Status and price advantage — EU citizen, twenty-four, and still in a low market-value band. For a centre-back who has started La Liga matches, that combination is uncommon in the European market.

Development Areas and Risks

• Ball progression — His distribution is functional but not incisive. Line-breaking vertical passing and clean first passes under pressure are not yet above La Liga’s mid-band. In a possession system the gap would surface quickly.
• Very small sample — Seven La Liga appearances and roughly 450 minutes. At that volume no rate statistic is reliable, and this report deliberately avoids per-90 extrapolation. Much of the assessment rests on Croatian data and match observation.
• Aerial presence is adequate, not dominant — 1.85 m is sufficient for a centre-back but not a top-band figure. He won three aerial duels across the first two matchdays. He should not be asked to anchor a defence in a system that lives on aerial contests.
• Risk of decision errors — On 20 August 2026 against Rayo Vallecano a mistimed challenge near the box formed part of the sequence that produced the goal, and he looked hesitant in phases. That is the price of proactive defending: a badly timed step-out converts directly into a chance.
• Two medical entries requiring monitoring — Knee meniscus surgery between December 2025 and March 2026, and head trauma in July-August 2026. Both were overcome, but the last twelve months contain two interruptions and his pre-season was incomplete.
• Place in the squad is not secure — Valentini’s arrival in August 2026 and Facundo Garcés’s eventual return create a three-way contest in central defence. Koski started the season in the XI but has not locked down the shirt.

Cost Scenarios

GegenSports Scout Ratings (/100)

These ratings are GegenSports’s editorial scouting assessment. They combine match observation, current statistics, league level, age, contract situation and estimated transfer cost; they are not taken from any external platform’s rating table. Because the sample is unusually small, the technical ratings carry a wider margin of uncertainty than in our other reports. Football simulation attributes are not real scouting data and have not been used here.

Comparable Players

Sporting Director’s Note

Frequently Asked Questions

Sources and Data Note

This report was compiled by cross-checking Deportivo Alavés and LaLiga official records, publicly available match footage and match reports, FotMob, Soccerway, FútbolFantasy and Transfermarkt records, and relevant reporting in the Spanish and Finnish press. The tactical assessment and ratings are GegenSports editorial scouting analysis. The limits of the sample are stated explicitly in the relevant sections. Data valid as of 28 August 2026.

• LaLiga official player page — Ville Koski profile and season records
• FotMob — 2025-26 and 2026-27 match ratings, minutes and career data
• FútbolFantasy — 2026-27 matchday defensive breakdown (aerial duels, clearances, interceptions), contract and injury records
• Soccerway and WorldFootball — club-by-club appearance and transfer records
• Wikipedia (English) — career table, international record and honours
• Noticias de Álava — 15 June 2026 permanent transfer report, 13-14 May 2026 Barcelona match analysis, and the 27 August 2026 piece on the Koski-Valentini competition
• Comuniate and Fichajes.com — the reported fee of approximately €400,000 and the contract to 2031
• El Gol Digital and FútbolFantasy — confirmed line-ups for Alavés-Getafe (15 August 2026) and Rayo-Alavés (20 August 2026)
• Infobae — pre-match squad report for Alavés-Barcelona on 13 May 2026
• Yle and MTV Uutiset — reporting on Koski’s adaptation in Spain, his permanent contract and its significance for Finnish defenders
• Huuhkajat.com — assessment of the May 2026 Oviedo performance and the purchase-option context
• VAVEL — the Baskonia-Alavés Group’s purchase of 85 per cent of NK Istra 1961 (2018)
• Turkish Football Federation — 2026-27 Süper Lig foreign player regulation (10+4)

Last updated: 28 August 2026