FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
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Portrait of Ayyoub Bouaddi

Ayyoub

Bouaddi

CMMorocco · LOSC Lille

№ 1097139World Class €31.2M +0.47

Photo: Bryan Berlin / WikiPortraits, CC BY-SA 4.0 (background removed)

Player dossierLigue 1

AyyoubBouaddi

CMCentral MidfieldMidfield

Club
LOSC Lille
League
Ligue 1
Nationality
Morocco
Age
18
Height
185 cm
Foot
Right
Valued
1 Jun 2026

Reading the valuation

The market values Bouaddi at €50M. Model A, which never saw Bouaddi during training, estimates €31.2M: the market value is 60% above that estimate.

That is a factor of ×1.60. 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 €36M, closer to the market here, although it is usually further off (typical miss ×2.07).

A gap describes the model's arithmetic for this player's inputs, not what the player is worth.

▲ +0.47A €31.2M▲ +0.33B €36M
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
73
Minutes
4,765
Goals
0
Assists
3
Started
53/73
Min / app
65
Cards
12Y 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 Bouaddi…

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
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €50MModel A €31.2M

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 1,687 midfielders

Ayyoub Bouaddi's percentiles among midfielders: Goals per 90 10th, Assists per 90 32nd, Minutes, two years 84th, Starts 56th, Minutes, last 365 days 91st, European club minutes 94th10thGoals32ndAssists84thMinutes56thStarts91stRecent94thEurope

Dashed ring: the midfielder median (50th percentile)

European club minutes

Share of minutes played in UEFA club competitions.

27% this player0% midfielder median94th percentile

0%peer deciles · median line · this player ●85%

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
Dec 2023
Peak
€50M
Mar 2026
Model target
€50M
Jun 2026
Valuations
10
0 club changes
Jun 2026€50MLOSC LilleValuation the model is trained to reproduce

Jun 2026: €50M, LOSC Lille. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2023-12-18€5MLOSC Lille
2024-06-03€6MLOSC Lille
2024-10-07€10MLOSC Lille
2024-12-10€25MLOSC Lille
2025-03-24€30MLOSC Lille
2025-06-03€28MLOSC Lille
2025-10-10€30MLOSC Lille
2025-12-15€40MLOSC Lille
2026-03-27€50MLOSC Lille
2026-06-01€50MLOSC Lille

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
+0.472

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 →

Ligue 1423 players · median €5M

Valued above 97% of the 423 Ligue 1 players.

€100k€750k€5M€30M€50MSee them in the Explorer →

Midfielders, all leagues1,687 players · median €2M

Valued above 97% of the 1,687 midfielders.

€20k€200k€2M€20M€50MSee them in the Explorer →

Where Bouaddi appears

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).