Juma Bah

20 yrs · Centre-back · Sierra Leone
OGC Nice · Ligue 1 · Foot: right · Height: 195 cm
Risk: ModerateConfidence: MediumSample: HighDevelopment: HighContract: until 30 Jun 2031
Market value
€10.0M
Updated today
Estimated acquisition
€8.6M – €16.5M
Estimated · 20–80% range
Model value
€2.1M – €30.3M
Performance-implied · estimated
Projected (24m)
€6.5M – €25.4M
Resale range · estimated
Potential value gap
-€14.5M – €21.7M
Model value − acquisition

Value picture

Where the market, the likely price and the model estimates sit.

Estimated acquisition€8.6M – €16.5M
Model value (performance-implied)€2.1M – €30.3M
Projected value (24 months)€6.5M – €25.4M
Dashed line: current market value (€10.0M). Bars are 20–80% model ranges; tick = median.

The model rates Juma Bah's performance-implied value at EUR 2.1M-30.3M, below the estimated acquisition range of EUR 8.6M-16.5M. Its 24-month market value projection is EUR 6.5M-25.4M. Confidence is medium: no event-level data (xG, progressive actions) is available from the current free source, and injury history is unavailable.

Bargain Index: 64

What drives the score. Not a black box: each component and its level.

PerformanceAverage51.6th pct among DEF peers (age-neutral)
AgeVery favorable20.2 years
Acquisition costUnfavorableest. €11.8M vs market €10.0M
Expected appreciationHigh+34% over ~2 years (model)
Value gapVery negativeweak predictor on its own
DevelopmentHighbreakout probability 30%
League translationBig-five leagueleague coefficient 0.88
Tactical fitNot evaluatedRequires event/role data not available from the current free source.
RiskModerate
Data confidenceMedium

Bargain Index = percentile (among all evaluated players) of expected 2-year value relative to estimated cost. See methodology and backtests.

Market value history

Market value ≠ transfer fee ≠ acquisition cost.

Highest recorded: €10.0M

Profile vs positional peers

Percentiles among 1268 evaluated DEF players with 900+ minutes.

Performance (last season, league)

Minutes
1954 (64% of available)
Goals + assists / 90
0.00
Context-adjusted G+A / 90
0.03
xG, xA, progression
Data unavailable
Defensive actions
Data unavailable
Performance percentile
52 (Average)

Adjusted = shrunk toward positional baseline for small samples, corrected for team dominance over opponents, expressed relative to positional peers in the same league.

Context

League strength
0.88 (rank 5)
Team strength (Elo)
1358
Opponent strength
1484
Possession, role
Data unavailable

League strength 1.00 = average club of the big-five leagues. Elo includes continental matches.

Potential

Development
High
Trajectory
stable
Breakout probability
30%
Resale range (24m)
€6.5M – €25.4M

Trajectory drivers: minutes share up 19 pts; changed club; relative output down 40% vs positional peers.

Historical comparables (8): median 2-year value change -2% (IQR -36% to +58%).

Risk profile

Overall: Moderate

  • ▲Projection range among the widest 10% of evaluated players.
  • ⓘInjury history unavailable from current data source.

League translation

What happened to players who moved from this league to the big-five leagues (observed, not a forecast).

Already playing in a big-five league.

Output is relative to positional peers in each league. Movers are a selected group (clubs buy players who fit), so treat this as context, not a guarantee.

Season-by-season (domestic league)

Context-adjusted values are model outputs.

SeasonClubLeaguePosAppsMinMin shareGAG+A/90Adj. G+A/90Opp. EloTeam EloLeague str.
2025/26OGC NiceLigue 1CB26195464%000.000.03148413580.88
2024/25Real Valladolid CFLaligaCB1286325%000.000.05149412160.95
2024/25RC LensLigue 1CB1068622%000.000.04146214840.88

Cups & continental competitions

SeasonCompetitionClubAppsMinGAAvg opp. Elo
2025/26Uefa Europa LeagueOGC Nice6526001479
2025/26Uefa Champions League QualifyingOGC Nice2180001638
2024/25Copa Del ReyReal Valladolid CF19000—

Small continental samples are shown for context only and are not over-weighted.

Historical comparables

Most similar profiles 2+ years ago (same position group) and what happened next. Chosen by similarity only — failures included.

Player (then)AgeValue then~2y laterOutcome
Maxime Estève
Ligue 1 · 2022
20€4.5M€7.0Mrose
Andrea Carboni
Serie A · 2022
21€5.0M€4.0Mfell
Benoît Badiashile
Ligue 1 · 2020
19€18.0M€30.0Mrose
Filippo Romagna
Serie A · 2018
21€7.0M€4.8Mfell
Armel Bella-Kotchap
Bundesliga · 2022
21€10.0M€12.0Mrose
Étienne Youté Kinkoué
Ligue 1 · 2024
22€7.0M€2.5Mfell
Iván Fresneda
Laliga · 2023
19€15.0M€8.0Mfell
Mohamed Simakan
Ligue 1 · 2020
20€7.2M€22.0Mrose

Transfer history

Fees as reported by the source; undisclosed fees shown as unknown, never estimated.

DateFromToFeeMV at time
30 Jun 2026NiceMan CityFree / loan€10.0M
1 Jul 2025Man CityNiceFree / loan€6.0M
30 Jun 2025LensMan CityFree / loan€6.0M
28 Jan 2025Man CityLensFree / loan€1.0M
27 Jan 2025Real ValladolidMan City€6.0M€1.0M
1 Jan 2025AIK FreetongReal Valladolid€125k€1.0M
31 Dec 2024Real ValladolidAIK FreetongFree / loan€1.0M
26 Aug 2024AIK FreetongReal ValladolidFree / loanData unavailable
1 Jul 2023SLIFAAIK FreetongUnknownData unavailable

MoneyballAI identifies statistical opportunities from available data. A player flagged as a potential bargain is not guaranteed to succeed, to transfer, to rise in value, or to generate resale profit. Market values, fees and contracts come from third-party sources; ranges are model estimates with stated confidence.