Issiaga Sylla

32 yrs · Left-back (also LM) · Guinea
A.G.S Asteras Tripolis · Super League 1 · Foot: left · Height: 180 cm
Risk: Very HighConfidence: MediumSample: MediumDevelopment: LowContract: until 30 Jun 2027
Market value
€700k
Updated today
Estimated acquisition
€173k – €626k
Estimated · 20–80% range
Model value
€199k – €363k
Performance-implied · estimated
Projected (24m)
€213k – €524k
Resale range · estimated
Potential value gap
-€427k – €190k
Model value − acquisition

Value picture

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

Estimated acquisition€173k – €626k
Model value (performance-implied)€199k – €363k
Projected value (24 months)€213k – €524k
Dashed line: current market value (€700k). Bars are 20–80% model ranges; tick = median.

The model rates Issiaga Sylla's performance-implied value at EUR 0.2M-0.4M, above the estimated acquisition range of EUR 0.2M-0.6M. Its 24-month market value projection is EUR 0.2M-0.5M. Confidence is medium: 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: 40

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

PerformanceBelow average26.7th pct among DEF peers (age-neutral)
AgeUnfavorable32.5 years
Acquisition costVery favorableest. €231k vs market €700k
Expected appreciationVery low-54% over ~2 years (model)
Value gapLargeweak predictor on its own
DevelopmentLow
League translationUncertainleague coefficient 0.43
Tactical fitNot evaluatedRequires event/role data not available from the current free source.
RiskVery High
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: €3.5M

Profile vs positional peers

Percentiles among 1268 evaluated DEF players with 900+ minutes.

Performance (last season, league)

Minutes
1453 (62% of available)
Goals + assists / 90
0.00
Context-adjusted G+A / 90
0.08
xG, xA, progression
Data unavailable
Defensive actions
Data unavailable
Performance percentile
27 (Below 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
0.42 (rank 16)
Team strength (Elo)
1138
Opponent strength
1239
Possession, role
Data unavailable

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

Potential

Development
Low
Trajectory
stable
Breakout probability
Age > 23
Resale range (24m)
€213k – €524k

Trajectory drivers: minutes share up 25 pts; changed club; team strength down (-98 Elo); league level down (-186 Elo); relative output down 37% vs positional peers.

Historical comparables (8): median 2-year value change -34% (IQR -60% to -28%).

Risk profile

Overall: Very High

  • ▲Age 32: resale value typically declines.
  • ⚠Limited sample: 1453 league minutes last season.
  • ⚠League level coefficient 0.43 (1.00 = big-five average): output may not translate.
  • ⚠No continental-competition minutes last season.
  • ⚠Contract ends in 12 months: cheaper, but competition and wage demands likely.
  • ⓘ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).

Historical movers
25 (DEF)
Relative output kept
55%–230%
Held a regular role (900+ min)
68%
Confidence
Medium

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.
2025/26A.G.S Asteras TripolisSuper League 1LB18145362%000.000.08123911380.43
2024/25Montpellier HSCLigue 1LB19113337%100.080.13143912360.88
2023/24Montpellier HSCLigue 1LB19145748%120.190.17146914340.87
2022/23FC ToulouseLigue 1LB17137640%000.000.09144713470.82
2022/23Montpellier HSCLigue 1LB15130538%130.280.26142114400.82
2020/21RC LensLigue 1LM20111733%100.080.15144713710.75
2019/20FC ToulouseLigue 1LB282520100%020.070.14143212100.82
2018/19FC ToulouseLigue 1LB24199358%200.090.15146413170.82
2017/18FC ToulouseLigue 1LB25159747%130.230.27147013520.85
2016/17FC ToulouseLigue 1LM27167849%110.110.14144014030.88
2015/16GFC AjaccioLigue 1LB34269579%040.130.19145412910.78
2014/15FC ToulouseLigue 1LM1274422%110.240.25139713430.80
2013/14FC ToulouseLigue 1LM32244772%310.150.21148013950.79
2012/13FC ToulouseLigue 1LB42337%100.390.20145814790.88

Cups & continental competitions

SeasonCompetitionClubAppsMinGAAvg opp. Elo
2025/26Kypello ElladasA.G.S Asteras Tripolis19000—

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
Sofyane Cherfa
Super League 1 · 2016
32€400k€50kfell
Vitaliy Yermakov
Premier Liga · 2022
30€400k€250kfell
Emanuel Sakic
Super League 1 · 2023
32€250k€100kfell
Paul Dixon
Scottish Premiership · 2016
30€450k€325kfell
Federico Ceccherini
Super Lig · 2024
32€1.0M€400kfell
Apostolos Skondras
Super League 1 · 2019
31€350k€250kfell
Keith Watson
Scottish Premiership · 2023
34€300k€250kflat
Kyriakos Papadopoulos
Super League 1 · 2022
30€500k€350kfell

Transfer history

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

DateFromToFeeMV at time
15 Jul 2025MontpellierAsteras AktorFree / loan€1.5M
31 Jan 2023ToulouseMontpellierFree / loan€2.0M
30 Jun 2021LensToulouseFree / loan€2.0M
13 Aug 2020ToulouseLensFree / loan€2.8M
30 Jun 2016G. AjaccioToulouseFree / loan€2.0M
4 Jul 2015ToulouseG. AjaccioFree / loan€1.5M
4 Sept 2012Horoya ACToulouseUnknownData unavailable
1 Jul 2011Horoya AC U19Horoya ACUnknownData 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.