Martin
Terrier
LWFrance · Bayer 04 Leverkusen
Image: FootyLogos
Player dossierBundesliga
MartinTerrier
LWLeft WingerAttack
- Club
- Bayer 04 Leverkusen
- League
- Bundesliga
- Nationality
- France
- Age
- 29
- Height
- 184 cm
- Foot
- Right
- Valued
- 27 May 2026
BundesligaReading the valuation
The market values Terrier at €8M. Model A, which never saw Terrier during training, estimates €3.5M: the market value is 125% above that estimate.
That is a factor of ×2.25. Model A's typical held-out miss is ×1.50 either way, so this gap is larger than its usual error.
Without league and club, Model B estimates €2.2M, further from the market. Model B is usually further off (typical miss ×2.07): league and club explain much of how the market prices players.
A gap describes the model's arithmetic for this player's inputs, not what the player is worth.
- Apps
- 44
- Minutes
- 1,729
- Goals
- 7
- Assists
- 3
- Started
- 20/44
- Min / app
- 39
- Cards
- 2Y 1R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Terrier…
SHAP describes the model's arithmetic for this player's inputs, not what causes market value. Model B can be explained only by the live service; Model A also has a published explanation for the research players.
Model A vs Model B against the observed €8M
Checking APIAsking the prediction API…
Held-out estimates come from cross-validation, with this player outside the training data: the honest comparison. Served models were refitted on every player, this one included, so they sit closer to the market. Shaded band: Model A's typical miss (×1.50 either way).
Player traitspercentiles vs 1,583 attackers
Dashed ring: the attacker median (50th percentile)
European club minutes
Share of minutes played in UEFA club competitions.
15% this player0% attacker median77th percentile
No passing, progression or defensive actions exist in the dataset, so no trait claims to measure them.
Valuation history every Transfermarkt valuation on record
- First valuation
- €250k
- Jan 2017
- Peak
- €35M
- Nov 2022
- Model target
- €8M
- May 2026
- Valuations
- 25
- 4 club changes
May 2026: €8M, Bayer 04 Leverkusen. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2017-01-16 | €250k | LOSC Lille |
| 2017-06-01 | €400k | LOSC Lille |
| 2018-01-24 | €12M | RC Strasbourg Alsace |
| 2018-06-04 | €9M | RC Strasbourg Alsace |
| 2018-12-17 | €9M | Olympique Lyon |
| 2019-06-03 | €15M | Olympique Lyon |
| 2019-12-19 | €13M | Olympique Lyon |
| 2020-04-08 | €10.5M | Olympique Lyon |
| 2020-08-03 | €12M | Stade Rennais FC |
| 2020-10-15 | €12M | Stade Rennais FC |
| 2021-06-04 | €13M | Stade Rennais FC |
| 2021-12-16 | €14M | Stade Rennais FC |
| 2022-03-23 | €16M | Stade Rennais FC |
| 2022-05-30 | €25M | Stade Rennais FC |
| 2022-09-19 | €32M | Stade Rennais FC |
| 2022-11-02 | €35M | Stade Rennais FC |
| 2023-06-27 | €30M | Stade Rennais FC |
| 2023-12-18 | €22M | Stade Rennais FC |
| 2024-03-19 | €25M | Stade Rennais FC |
| 2024-06-03 | €20M | Stade Rennais FC |
| 2024-12-20 | €20M | Bayer 04 Leverkusen |
| 2025-03-27 | €17M | Bayer 04 Leverkusen |
| 2025-06-05 | €17M | Bayer 04 Leverkusen |
| 2025-12-19 | €12M | Bayer 04 Leverkusen |
| 2026-05-27 | €8M | Bayer 04 Leverkusen |
Audit context group-level, not about this player
- Audit group
- UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- +0.813
The group comes from first-listed citizenship and is never a model input. Across the population, non-UEFA players' market values sit about 10% above Model A's held-out estimates, relative to UEFA players in the same leagues. One player's residual says nothing about that pattern (typical miss ×1.50), and none of it is evidence of discrimination: the target may itself be biased. Open the Fairness Audit
In context observed value among comparable players in this build
All players in the Terminal →Bundesliga451 players · median €5M
Valued above 60% of the 451 Bundesliga players.
See them in the Explorer →Attackers, all leagues1,583 players · median €2.5M
Valued above 74% of the 1,583 attackers.
See them in the Explorer →Where Terrier appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- ElvediCBBorussia Mönchengladbach · Bundesliga€8M
- KleindienstCFBorussia Mönchengladbach · Bundesliga€8M
- KarazorDMVfB Stuttgart · Bundesliga€8M
- NicolasGKBorussia Mönchengladbach · Bundesliga€8M
- GriezmannSSAtlético de Madrid · attackers€8M
- ZivkovicRWPAOK Thessaloniki · attackers€8M
- BogaLWJuventus FC · attackers€8M
- WilliamsRWAthletic Bilbao · attackers€8M
Counts and ranks of observed Transfermarkt values only; model errors are never ranked here. Full player export: Every player in the modelling population (D-011).