Mouctar Diakhaby

29 yrs · Centre-back · Guinea
Valencia CF · Laliga · Foot: right · Height: 192 cm
Risk: HighConfidence: LowSample: LowDevelopment: LowContract: until 30 Jun 2027
Market value
€1.5M
Updated 6 days ago
Estimated acquisition
€468k – €1.3M
Estimated · 20–80% range
Model value
€1.7M – €4.4M
Performance-implied · estimated
Projected (24m)
€665k – €1.6M
Resale range · estimated
Potential value gap
€408k – €3.9M
Model value − acquisition

Value picture

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

Estimated acquisition€468k – €1.3M
Model value (performance-implied)€1.7M – €4.4M
Projected value (24 months)€665k – €1.6M
Dashed line: current market value (€1.5M). Bars are 20–80% model ranges; tick = median.

The model rates Mouctar Diakhaby's performance-implied value at EUR 1.7M-4.4M, above the estimated acquisition range of EUR 0.5M-1.3M. Its 24-month market value projection is EUR 0.7M-1.6M. Confidence is low: no event-level data (xG, progressive actions) is available from the current free source, and injury history is unavailable.

Acquisition note: Final year of contract: selling club's leverage is reduced.

Bargain Index: not assigned

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

Insufficient sample (< 900 league minutes)

PerformanceAbove average61.1th pct among DEF peers (age-neutral)
AgeUnfavorable29.5 years
Acquisition costVery favorableest. €623k vs market €1.5M
Expected appreciationVery low-28% over ~2 years (model)
Value gapVery largeweak predictor on its own
DevelopmentLow
League translationBig-five leagueleague coefficient 0.95
Tactical fitNot evaluatedRequires event/role data not available from the current free source.
RiskHigh
Data confidenceLow

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: €30.0M

Profile vs positional peers

Percentiles among 1269 evaluated DEF players with 900+ minutes.

Performance (last season, league)

Minutes
544 (16% of available)
Goals + assists / 90
0.17
Context-adjusted G+A / 90
0.13
xG, xA, progression
Data unavailable
Defensive actions
Data unavailable
Performance percentile
61 (Above 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
0.95 (rank 2)
Team strength (Elo)
1497
Opponent strength
1486
Possession, role
Data unavailable

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

Potential

Development
Low
Trajectory
declining
Breakout probability
Age > 23
Resale range (24m)
€665k – €1.6M

Trajectory drivers: relative output down 29% vs positional peers.

Historical comparables (8): median 2-year value change -22% (IQR -54% to -13%).

Risk profile

Overall: High

  • ▲Small sample: 544 league minutes last season.
  • ⚠Contract ends in 12 months: cheaper, but competition and wage demands likely.
  • ⚠Played under 40% of available league minutes (injury data unavailable, cause unknown).
  • ⚠Declining trajectory versus previous season.
  • ⓘ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.
2025/26Valencia CFLaligaCB854416%100.170.13148614960.95
2024/25Valencia CFLaligaCB1365119%200.280.17153614630.95
2023/24Valencia CFLaligaCB14107331%100.080.10151914591.00
2022/23Valencia CFLaligaCB29244972%300.110.11149414440.98
2021/22Valencia CFLaligaCB29194557%010.050.06154414871.05
2020/21Valencia CFLaligaCB26208261%100.040.06153415011.10
2019/20Valencia CFLaligaCB21144142%000.000.02149515481.16
2018/19Valencia CFLaligaCB22157446%210.170.11152016531.14
2017/18Olympique LyonLigue 1CB1272521%100.120.08144116450.85
2016/17Olympique LyonLigue 1CB22193056%120.140.10144716040.88

Cups & continental competitions

SeasonCompetitionClubAppsMinGAAvg opp. Elo
2025/26Copa Del ReyValencia CF14500—
2024/25Copa Del ReyValencia CF16400—
2023/24Copa Del ReyValencia CF19000—
2022/23Copa Del ReyValencia CF14500—
2021/22Copa Del ReyValencia CF873501—
2020/21Copa Del ReyValencia CF12400—
2019/20Uefa Champions LeagueValencia CF5310001632
2019/20Copa Del ReyValencia CF330000—
2018/19Uefa Europa LeagueValencia CF6540101572
2018/19Copa Del ReyValencia CF745700—
2018/19Uefa Champions LeagueValencia CF3270001676
2017/18Uefa Europa LeagueOlympique Lyon5450101506
2016/17Uefa Europa LeagueOlympique Lyon8750301611
2016/17Uefa Champions LeagueOlympique Lyon3270001757

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
Diego Novaretti
Serie A · 2014
29€1.2M€1.0Mflat
Lucas Mareque
Ligue 1 · 2013
30€1.0M€750kfell
Niko Bungert
Bundesliga · 2014
28€2.5M€2.5Mflat
Lautaro Giannetti
Serie A · 2024
31€2.5M€1.2Mfell
Shkodran Mustafi
Laliga · 2022
30€2.0M€800kfell
Juanma Ortiz
Laliga · 2013
31€1.2M€300kfell
Deiver Machado
Ligue 1 · 2022
29€1.8M€4.0Mrose
Pedro Alcalá
Laliga · 2018
29€800k€650kflat

Transfer history

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

DateFromToFeeMV at time
1 Jul 2018LyonValencia€15.0M€10.0M
1 Jul 2016Olymp. Lyon BLyonUnknownData unavailable
1 Jul 2014Olymp. Lyon U19Olymp. Lyon BUnknownData unavailable
1 Aug 2013USSA Vertou U17Olymp. Lyon U19Free / loanData unavailable
1 Jul 2011Vertou JugendUSSA Vertou U17UnknownData unavailable
1 Jul 2010FC Nantes Yth.Vertou JugendFree / loanData unavailable
1 Jul 2009Vertou JugendFC Nantes Yth.Free / loanData 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.