Andrey
Santos
CMBrazil · Chelsea FC
Image: FootyLogos
Player dossierPremier League
AndreySantos
CMCentral MidfieldMidfield
- Club
- Chelsea FC
- League
- Premier League
- Nationality
- Brazil
- Age
- 22
- Height
- 180 cm
- Foot
- Right
- Valued
- 3 Jun 2026
Premier LeagueReading the valuation
The market values Santos at €40M. Model A, which never saw Santos during training, estimates €43M: the market value is 7% below that estimate.
That is a factor of ×1.07. Model A's typical held-out miss is ×1.50 either way, so this gap is within its usual error.
Without league and club, Model B estimates €27.7M, 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
- 79
- Minutes
- 5,413
- Goals
- 13
- Assists
- 9
- Started
- 58/79
- Min / app
- 69
- Cards
- 16Y 0R
Club matches, two years to the valuation date
The Valuation Journey
What moves Model A
Asking the prediction API to explain Model A for Santos…
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 €40M
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 1,687 midfielders
Dashed ring: the midfielder median (50th percentile)
Minutes, two years
Total club minutes in the two-year window: how much the player was used.
5,413 this player2,607 midfielder median90th 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
- €5M
- Aug 2022
- Peak
- €45M
- Mar 2026
- Model target
- €40M
- Jun 2026
- Valuations
- 13
- 6 club changes
Jun 2026: €40M, Chelsea FC. Dotted lines mark the €2M, €10M and €30M tier boundaries.
Show as a table
| Date | Market value | Club |
|---|---|---|
| 2022-08-05 | €5M | Clube de Regatas Vasco da Gama |
| 2022-12-28 | €10M | Clube de Regatas Vasco da Gama |
| 2023-02-17 | €12M | Chelsea FC |
| 2023-04-07 | €15M | Clube de Regatas Vasco da Gama |
| 2023-07-25 | €15M | Chelsea FC |
| 2023-12-19 | €14M | Nottingham Forest |
| 2024-06-03 | €15M | RC Strasbourg Alsace |
| 2024-10-07 | €18M | RC Strasbourg Alsace |
| 2024-12-10 | €25M | RC Strasbourg Alsace |
| 2025-06-03 | €35M | Chelsea FC |
| 2025-12-09 | €40M | Chelsea FC |
| 2026-03-09 | €45M | Chelsea FC |
| 2026-06-03 | €40M | Chelsea FC |
Audit context group-level, not about this player
- Audit group
- non-UEFA
- Population gap, Model A
- +0.093 95% CI +0.063 to +0.124
- This player, market vs held-out A
- −0.071
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 →Premier League555 players · median €18M
Valued above 83% of the 555 Premier League players.
See them in the Explorer →Midfielders, all leagues1,687 players · median €2M
Valued above 96% of the 1,687 midfielders.
See them in the Explorer →Where Santos appears
Watchlists and the comparison tray are kept in this browser only.
Near this valuation closest observed values: same league, then same position
- ChalobahCBChelsea FC · Premier League€40M
- KamaraDMAston Villa · Premier League€40M
- SarrRWCrystal Palace · Premier League€40M
- KonsaCBAston Villa · Premier League€40M
- McTominayCMSSC Napoli · midfielders€40M
- BaumgartnerAMRB Leipzig · midfielders€40M
- TrincãoAMSporting CP · midfielders€40M
- GonzálezDMManchester City · midfielders€40M
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).