FairValue

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  • EnvironmentOverviewWhat FairValue measures, what it found, where to go next.
  • EnvironmentTerminalExplore, compare and track players; market, league and model views.
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Portrait of Neil El Aynaoui

Neil El

Aynaoui

CMMorocco · AS Roma

№ 901019Elite €13.6M +0.53

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

Player dossierSerie A

Neil ElAynaoui

CMCentral MidfieldMidfield

Club
AS Roma
League
Serie A
Nationality
Morocco
Age
24
Height
185 cm
Foot
Right
Valued
29 May 2026

Reading the valuation

The market values Aynaoui at €23M. Model A, which never saw Aynaoui during training, estimates €13.6M: the market value is 70% above that estimate.

That is a factor of ×1.70. 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 €8.7M, 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.

▲ +0.53A €13.6M▲ +0.97B €8.7M
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
58
Minutes
3,290
Goals
10
Assists
3
Started
33/58
Min / app
57
Cards
10Y 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 Aynaoui…

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 €23M

Checking API
EmergingEstablishedEliteWorld Class€2M€10M€30M€100k€1M€100MMarket €23MModel A €13.6M

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

Neil El Aynaoui's percentiles among midfielders: Goals per 90 91st, Assists per 90 45th, Minutes, two years 62nd, Starts 30th, Minutes, last 365 days 55th, European club minutes 86th91stGoals45thAssists62ndMinutes30thStarts55thRecent86thEurope

Dashed ring: the midfielder median (50th percentile)

Goals per 90

Club goals per 90 minutes played in the two years to the valuation date.

0.27 this player0.08 midfielder median91st percentile

0.00peer deciles · median line · this player ●0.93

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
€150k
Aug 2021
Peak
€23M
May 2026
Model target
€23M
May 2026
Valuations
15
2 club changes
May 2026€23MAS RomaValuation the model is trained to reproduce

May 2026: €23M, AS Roma. Dotted lines mark the €2M, €10M and €30M tier boundaries.

Show as a table
DateMarket valueClub
2021-08-06€150kAS Nancy-Lorraine
2021-12-27€300kAS Nancy-Lorraine
2022-03-24€600kAS Nancy-Lorraine
2022-06-02€900kAS Nancy-Lorraine
2022-12-20€700kAS Nancy-Lorraine
2023-06-14€700kAS Nancy-Lorraine
2023-12-18€5MRC Lens
2024-03-19€8MRC Lens
2024-06-03€8MRC Lens
2024-12-10€8MRC Lens
2025-03-24€10MRC Lens
2025-06-03€15MRC Lens
2025-10-07€20MAS Roma
2025-12-23€20MAS Roma
2026-05-29€23MAS Roma

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
+0.528

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

Valued above 87% of the 507 Serie A players.

€100k€750k€5M€30M€23MSee them in the Explorer →

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

Valued above 90% of the 1,687 midfielders.

€20k€200k€2M€20M€23MSee them in the Explorer →

Where Aynaoui 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).