Mats Wieffer
Value picture
Where the market, the likely price and the model estimates sit.
The model rates Mats Wieffer's performance-implied value at EUR 15.6M-34.0M, above the estimated acquisition range of EUR 12.4M-27.5M. Its 24-month market value projection is EUR 12.9M-29.6M. Confidence is medium: no event-level data (xG, progressive actions) is available from the current free source, and injury history is unavailable.
Bargain Index: 40
What drives the score. Not a black box: each component and its level.
| Performance | Elite | 90.9th pct among DEF peers (age-neutral) |
| Age | Neutral | 26.6 years |
| Acquisition cost | Favorable | est. €21.3M vs market €25.0M |
| Expected appreciation | Low | -21% over ~2 years (model) |
| Value gap | Small | weak predictor on its own |
| Development | Low | |
| League translation | Big-five league | league coefficient 1.3 |
| Tactical fit | Not evaluated | Requires event/role data not available from the current free source. |
| Risk | Low | |
| 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
- 1908 (56% of available)
- Goals + assists / 90
- 0.24
- Context-adjusted G+A / 90
- 0.23
- xG, xA, progression
- Data unavailable
- Defensive actions
- Data unavailable
- Performance percentile
- 91 (Elite)
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
- 1.30 (rank 1)
- Team strength (Elo)
- 1611
- Opponent strength
- 1601
- 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)
- €12.9M – €29.6M
Trajectory drivers: minutes share up 26 pts; role change DM -> RB; relative output down 38% vs positional peers.
Historical comparables (8): median 2-year value change -33% (IQR -60% to +3%).
Risk profile
Overall: Low
- ⓘ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.
| 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 | Brighton & Hove Albion | Premier League | RB | 26 | 1908 | 56% | 2 | 3 | 0.24 | 0.23 | 1601 | 1611 | 1.30 |
| 2024/25 | Brighton & Hove Albion | Premier League | DM | 25 | 1008 | 29% | 1 | 5 | 0.54 | 0.34 | 1568 | 1614 | 1.23 |
| 2023/24 | Feyenoord Rotterdam | Eredivisie | DM | 29 | 2591 | 85% | 5 | 3 | 0.28 | 0.11 | 1353 | 1593 | 0.48 |
| 2022/23 | Feyenoord Rotterdam | Eredivisie | DM | 25 | 1671 | 55% | 1 | 5 | 0.32 | 0.15 | 1349 | 1639 | 0.58 |
Cups & continental competitions
| Season | Competition | Club | Apps | Min | G | A | Avg opp. Elo |
|---|---|---|---|---|---|---|---|
| 2025/26 | Fa Cup | Brighton & Hove Albion | 1 | 9 | 0 | 0 | — |
| 2024/25 | Fa Cup | Brighton & Hove Albion | 1 | 40 | 0 | 0 | — |
| 2023/24 | Uefa Champions League | Feyenoord Rotterdam | 6 | 469 | 1 | 1 | 1618 |
| 2023/24 | Knvb Beker | Feyenoord Rotterdam | 4 | 360 | 0 | 0 | — |
| 2023/24 | Uefa Europa League | Feyenoord Rotterdam | 2 | 210 | 0 | 0 | 1583 |
| 2023/24 | Johan Cruijff Schaal | Feyenoord Rotterdam | 1 | 90 | 0 | 0 | 1649 |
| 2022/23 | Uefa Europa League | Feyenoord Rotterdam | 8 | 428 | 1 | 1 | 1577 |
| 2022/23 | Knvb Beker | Feyenoord Rotterdam | 4 | 345 | 1 | 1 | — |
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 |
|---|---|---|---|---|
| Thilo Kehrer Premier League · 2023 | 27 | €18.0M | €20.0M | flat |
| Ben Chilwell Premier League · 2023 | 27 | €35.0M | €15.0M | fell |
| Héctor Bellerín Premier League · 2021 | 26 | €25.0M | €8.0M | fell |
| Yerry Mina Premier League · 2020 | 26 | €20.0M | €20.0M | flat |
| Kristoffer Ajer Premier League · 2024 | 26 | €15.0M | €18.0M | rose |
| Alex Telles Premier League · 2022 | 30 | €18.0M | €6.0M | fell |
| Clément Lenglet Premier League · 2023 | 28 | €10.0M | €7.5M | fell |
| Davinson Sánchez Premier League · 2022 | 26 | €28.0M | €17.0M | fell |
Transfer history
Fees as reported by the source; undisclosed fees shown as unknown, never estimated.
| Date | From | To | Fee | MV at time |
|---|---|---|---|---|
| 5 Jul 2024 | Feyenoord | Brighton | €32.0M | €30.0M |
| 1 Jul 2022 | Excelsior | Feyenoord | €575k | €400k |
| 1 Jul 2020 | FC Twente U21 | Excelsior | Free / loan | €25k |
| 1 Jul 2018 | FC Twente U19 | FC Twente U21 | Unknown | Data unavailable |
| 1 Jul 2016 | FC Twente U17 | FC Twente U19 | Unknown | Data unavailable |
| 1 Jul 2015 | FC Twente Youth | FC Twente U17 | Unknown | Data unavailable |
| 1 Jul 2010 | NEO Jeugd | FC Twente Youth | 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.