Yann

Bisseck

CBGermany · Inter Milan

№ 441986World Class €28M +0.58

Player dossierSerie A

YannBisseck

CBCentre-BackDefender

Club: Inter Milan
League: Serie A
Nationality: Germany
Age: 25
Height: 196 cm
Foot: Right
Valued: 29 May 2026

Reading the valuation

The market values Bisseck at €50M. Model A, which never saw Bisseck during training, estimates €28M: the market value is 78% above that estimate.

That is a factor of ×1.78. 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 €25.2M, 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.

Pitch length is a log value scale fitted to this player's figures. ● observed · ◇ Model A · dashed ◇ Model B · each arc is a residual, log(observed) − log(estimate).

Apps: 81
Minutes: 5,629
Goals: 6
Assists: 6
Started: 60/81
Min / app: 69
Cards: 8Y 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 Bisseck…

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 €50M

Checking API

Asking 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 2,065 defenders

Dashed ring: the defender median (50th percentile)

Minutes, two years

Total club minutes in the two-year window: how much the player was used.

5,629 this player2,860 defender median90th percentile

451peer deciles · median line · this player ●9,111

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; Dec 2017
Peak: €50M; May 2026
Model target: €50M; May 2026
Valuations: 24; 6 club changes

May 2026€50MInter MilanValuation the model is trained to reproduce

May 2026: €50M, Inter Milan. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table

Date	Market value	Club
2017-12-28	€250k	1.FC Köln U19
2018-06-05	€250k	1.FC Köln U19
2019-01-08	€250k	1.FC Köln
2019-06-12	€250k	Holstein Kiel
2020-01-17	€350k	Roda JC Kerkrade
2020-04-08	€325k	Roda JC Kerkrade
2020-06-29	€325k	Roda JC Kerkrade
2021-01-28	€325k	Vitória Guimarães SC B
2021-08-01	€350k	Aarhus GF
2021-10-06	€700k	Aarhus GF
2021-12-28	€1M	Aarhus GF
2022-06-20	€1M	Aarhus GF
2022-12-22	€1.5M	Aarhus GF
2023-06-26	€5M	Aarhus GF
2023-10-11	€7M	Inter Milan
2023-12-20	€9M	Inter Milan
2024-03-12	€15M	Inter Milan
2024-06-05	€16M	Inter Milan
2024-10-18	€25M	Inter Milan
2024-12-18	€30M	Inter Milan
2025-06-17	€35M	Inter Milan
2025-12-23	€35M	Inter Milan
2026-03-24	€40M	Inter Milan
2026-05-29	€50M	Inter Milan

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: +0.578

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 →

Serie A507 players · median €5.5M

Joint 6th highest observed value among 507 Serie A players.

See them in the Explorer →

Defenders, all leagues2,065 players · median €2M

Valued above 98% of the 2,065 defenders.

See them in the Explorer →

Where Bisseck appears

TerminalSerie A in the Player Explorer
TerminalSerie A on the League Landscape

Watchlists and the comparison tray are kept in this browser only.

Near this valuation closest observed values: same league, then same position

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).