
Stephen Welsh
Value picture
Where the market, the likely price and the model estimates sit.
The model rates Stephen Welsh's performance-implied value at EUR 0.8M-1.4M, below the estimated acquisition range of EUR 0.8M-2.1M. Its 24-month market value projection is EUR 0.9M-3.1M. Confidence is medium: no event-level data (xG, progressive actions) is available from the current free source, and injury history is unavailable.
Bargain Index: 71
What drives the score. Not a black box: each component and its level.
| Performance | Below average | 32.7th pct among DEF peers (age-neutral) |
| Age | Neutral | 26.4 years |
| Acquisition cost | Favorable | est. €1.4M vs market €2.0M |
| Expected appreciation | Low | -14% over ~2 years (model) |
| Value gap | Very negative | weak predictor on its own |
| Development | Low | |
| League translation | Uncertain | league coefficient 0.31 |
| Tactical fit | Not evaluated | Requires event/role data not available from the current free source. |
| Risk | High | |
| Data confidence | Medium |
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.
Profile vs positional peers
Percentiles among 1268 evaluated DEF players with 900+ minutes.
Performance (last season, league)
- Minutes
- 1964 (66% of available)
- Goals + assists / 90
- 0.09
- Context-adjusted G+A / 90
- 0.09
- xG, xA, progression
- Data unavailable
- Defensive actions
- Data unavailable
- Performance percentile
- 33 (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
- 0.31 (rank 26)
- Team strength (Elo)
- 1246
- Opponent strength
- 1199
- Possession, role
- Data unavailable
League strength 1.00 = average club of the big-five leagues. Elo includes continental matches.
Potential
- Development
- Low
- Trajectory
- improving
- Breakout probability
- Age > 23
- Resale range (24m)
- €908k – €3.1M
Trajectory drivers: minutes share up 49 pts; changed club; team strength down (-133 Elo); league level down (-134 Elo); relative output up 69% vs positional peers.
Historical comparables (8): median 2-year value change +73% (IQR -25% to +104%).
Risk profile
Overall: High
- ▲League level coefficient 0.31 (1.00 = big-five average): output may not translate.
- ⚠No continental-competition minutes last season.
- ⚠Projection range wider than for most 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).
- Historical movers
- 16 (DEF)
- Relative output kept
- 90%–275%
- Held a regular role (900+ min)
- 75%
- Confidence
- Low
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.
| Season | Club | League | Pos | Apps | Min | Min share | G | A | G+A/90 | Adj. G+A/90 | Opp. Elo | Team Elo | League str. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2025/26 | Motherwell FC | Scottish Premiership | CB | 23 | 1957 | 66% | 1 | 1 | 0.09 | 0.09 | 1199 | 1245 | 0.31 |
| 2025/26 | Celtic FC | Scottish Premiership | CB | 1 | 7 | 0% | 0 | 0 | 0.00 | 0.05 | 1196 | 1406 | 0.31 |
| 2024/25 | KV Mechelen | Jupiler Pro League | CB | 7 | 405 | 15% | 0 | 0 | 0.00 | 0.05 | 1378 | 1350 | 0.63 |
| 2024/25 | Celtic FC | Scottish Premiership | CB | 1 | 90 | 3% | 0 | 0 | 0.00 | 0.03 | 1200 | 1512 | 0.34 |
| 2023/24 | Celtic FC | Scottish Premiership | CB | 9 | 430 | 14% | 0 | 0 | 0.00 | 0.03 | 1223 | 1511 | 0.34 |
| 2022/23 | Celtic FC | Scottish Premiership | CB | 4 | 360 | 12% | 1 | 0 | 0.25 | 0.06 | 1232 | 1588 | 0.40 |
| 2021/22 | Celtic FC | Scottish Premiership | CB | 9 | 775 | 26% | 0 | 1 | 0.12 | 0.04 | 1273 | 1575 | 0.50 |
| 2020/21 | Celtic FC | Scottish Premiership | CB | 11 | 917 | 31% | 1 | 0 | 0.10 | 0.06 | 1332 | 1534 | 0.54 |
| 2019/20 | Celtic FC | Scottish Premiership | CB | 1 | 76 | 3% | 0 | 0 | 0.00 | 0.02 | 1108 | 1608 | 0.52 |
Cups & continental competitions
| Season | Competition | Club | Apps | Min | G | A | Avg opp. Elo |
|---|---|---|---|---|---|---|---|
| 2025/26 | Scottish Fa Cup | Celtic FC | 1 | 68 | 0 | 0 | — |
| 2023/24 | Scottish Fa Cup | Celtic FC | 3 | 191 | 0 | 0 | — |
| 2023/24 | Uefa Champions League | Celtic FC | 1 | 75 | 0 | 0 | 1631 |
| 2022/23 | Uefa Champions League | Celtic FC | 1 | 90 | 0 | 0 | 1595 |
| 2021/22 | Uefa Europa League Qualifying | Celtic FC | 3 | 270 | 0 | 0 | 1472 |
| 2021/22 | Uefa Europa League | Celtic FC | 3 | 269 | 1 | 0 | 1546 |
| 2021/22 | Uefa Champions League Qualifying | Celtic FC | 2 | 210 | 0 | 0 | 1440 |
| 2021/22 | Scottish Fa Cup | Celtic FC | 3 | 210 | 0 | 0 | — |
| 2020/21 | Scottish Fa Cup | Celtic FC | 2 | 180 | 0 | 0 | — |
| 2020/21 | Uefa Europa League | Celtic FC | 3 | 56 | 0 | 0 | 1621 |
| 2019/20 | Scottish Fa Cup | Greenock Morton FC | 3 | 246 | 0 | 0 | — |
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) | Age | Value then | ~2y later | Outcome |
|---|---|---|---|---|
| Ahmet Calik Super Lig · 2021 | 27 | €650k | €1.4M | rose |
| Enzo Roco Super Lig · 2021 | 29 | €2.0M | €1.5M | fell |
| Kevin Diks Superliga · 2021 | 25 | €1.5M | €3.0M | rose |
| Lewis Miller Scottish Premiership · 2024 | 24 | €800k | €1.2M | rose |
| Majid Hosseini Super Lig · 2022 | 26 | €3.0M | €2.2M | fell |
| Arsen Adamov Premier Liga · 2024 | 25 | €1.8M | €1.0M | fell |
| Liam Scales Scottish Premiership · 2023 | 25 | €650k | €4.0M | rose |
| Uğurcan Yazğılı Super Lig · 2024 | 25 | €1.0M | €2.0M | rose |
Transfer history
Fees as reported by the source; undisclosed fees shown as unknown, never estimated.
| Date | From | To | Fee | MV at time |
|---|---|---|---|---|
| 1 Jul 2026 | Celtic | Swansea | Unknown | €2.0M |
| 31 May 2026 | Motherwell FC | Celtic | Free / loan | €2.0M |
| 2 Feb 2026 | Celtic | Motherwell FC | Free / loan | €800k |
| 12 Jan 2026 | Motherwell FC | Celtic | Free / loan | €800k |
| 1 Sept 2025 | Celtic | Motherwell FC | Free / loan | €1.0M |
| 30 Jun 2025 | KV Mechelen | Celtic | Free / loan | €1.0M |
| 9 Jan 2025 | Celtic | KV Mechelen | Free / loan | €800k |
| 1 Jul 2020 | Celtic B | Celtic | Unknown | €150k |
| 24 Jan 2020 | Morton | Celtic B | Free / loan | €50k |
| 29 Aug 2019 | Celtic B | Morton | Free / loan | Data unavailable |
| 1 Jul 2018 | Celtic U20 | Celtic B | Unknown | Data unavailable |
| 1 Jul 2017 | Celtic U17 | Celtic U20 | Unknown | Data unavailable |
| 1 Jun 2016 | Celtic Youth | Celtic U17 | Unknown | Data 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.