Mamadou Sarr
Mamadou Sarr, 21, from Senegal ➤ Real Sociedad, since 2026 ➤ Centre-Back ➤ Market value: €22.00m ➤ * 29/08/2005 in Martigues, France

Info
Biographical card, current club and contract facts. Empty fields mean the source did not publish that value.
- Club
- Real Sociedad
- League
- LaLiga
- Position
- Defender - Centre-Back
- Shirt
- #19
- Age
- 21
- Date of birth
- 29/08/2005
- Height
- 1,94m
- Foot
- right
- Citizenship
- Senegal, France
- Joined
- 28/08/2026
- Contract until
- 30/06/2027
- Market value
- €22.00m
- Career fees
- €24.00m
- Youth clubs
- ES Saint-Laurent-Blangy (2010-2012), RC Lens (2012-2018), Olympique Lyonnais (2018-2022)
Statistics
Career totals from Transfermarkt: this season, then by competition and by club. Minutes and cards appear when the source recorded them.
This season
| Season | Competition | Apps | Min | G | A | YC | RC |
|---|---|---|---|---|---|---|---|
| 26/27 | LaLiga | 0 | 0 | 0 | 0 | 0 | 0 |
By competition
| Competition | Apps | G | A |
|---|---|---|---|
| Ligue 1 | 44 | 0 | 1 |
| National 1 - Grp. C | 18 | 0 | 0 |
| National U19 - Grp. B | 15 | 1 | 0 |
| Jupiler Pro League | 6 | 0 | 0 |
| Coupe Gambardella | 5 | 2 | 0 |
| National 3 - Grp. K (-2024) | 4 | 1 | 0 |
| JPL Relegation Play-Offs | 4 | 0 | 0 |
| Premier League | 3 | 0 | 0 |
| UECL Qualifying | 2 | 0 | 0 |
| Coupe de France | 2 | 0 | 0 |
| FA Cup | 2 | 0 | 0 |
| UEFA Champions League | 1 | 0 | 0 |
| Conference League | 1 | 0 | 0 |
| Club World Cup | 1 | 0 | 0 |
| National 2 - Grp. H | 1 | 0 | 0 |
| Premier League Int. Cup U21 | 1 | 0 | 0 |
| LaLiga | 0 | 0 | 0 |
| EFL Cup | 0 | 0 | 0 |
| National U19 - Phase finale | 0 | 0 | 0 |
By club
| Club | Apps | G | A |
|---|---|---|---|
| R. Strasbourg | 46 | 0 | 1 |
| Olymp. Lyon B | 23 | 1 | 0 |
| Olymp. Lyon U19 | 20 | 3 | 0 |
| RWDM | 10 | 0 | 0 |
| Chelsea | 7 | 0 | 0 |
| Lyon | 3 | 0 | 0 |
| R. Strasbourg B | 1 | 0 | 0 |
| Real Sociedad | 0 | 0 | 0 |
Transfers
Recorded moves between clubs, with fee and market value on the day of the deal when the source has them.
| Date | Season | From | To | Fee | Market value |
|---|---|---|---|---|---|
| 30/06/2027 | 26/27 | Real Sociedad | Chelsea | End of loan | €22.00m |
| 28/08/2026 | 26/27 | Chelsea | Real Sociedad | loan transfer | €22.00m |
| 02/02/2026 | 25/26 | R. Strasbourg | Chelsea | End of loan | €25.00m |
| 01/08/2025 | 25/26 | Chelsea | R. Strasbourg | loan transfer | €20.00m |
| 09/06/2025 | 25/26 | R. Strasbourg | Chelsea | €14.00m | €20.00m |
| 22/08/2024 | 24/25 | Lyon | R. Strasbourg | €10.00m | €1.00m |
| 30/06/2024 | 23/24 | RWDM | Lyon | End of loan | €1.00m |
| 18/01/2024 | 23/24 | Lyon | RWDM | loan transfer | €1.00m |
| 01/07/2023 | 23/24 | Olymp. Lyon B | Lyon | - | €1.00m |
| 01/07/2022 | 22/23 | Olymp. Lyon U19 | Olymp. Lyon B | - | - |
| 01/07/2021 | 21/22 | Olymp. Lyon U17 | Olymp. Lyon U19 | - | - |
| 01/07/2020 | 20/21 | Ol. Lyon Yth. | Olymp. Lyon U17 | - | - |
| 01/07/2018 | 18/19 | Lens Yth. | Ol. Lyon Yth. | free transfer | - |
National
Senior and youth national-team spells: caps, goals, shirt number and whether the player is still in the current pool.
| Team | Caps | Goals | Shirt | Debut | Status |
|---|---|---|---|---|---|
| Senegal | 8 | 0 | 2 | 2025-11-18 | Current international |
| France U17 | 14 | 0 | 4 | 2021-08-18 | Former international |
| France U19 | 6 | 0 | 12 | 2023-09-07 | Former international |
| France U20 | 2 | 0 | 27 | 2024-09-06 | Former international |
| France U18 | 10 | 1 | 4 | 2022-09-21 | Former international |
Market value
Current and peak Transfermarkt valuations, plus the history of changes by club and age. Rankings are relative to the current squad, league and position group.
- Current
- €22.00m
- Highest
- €25.00m · 15/12/2025
- Last change
- 03/06/2026
| Date | Age | Club | Value |
|---|---|---|---|
| 27/03/2023 | 17 | Olympique Lyon B | €1.00m |
| 27/06/2023 | 17 | Olympique Lyon B | €1.00m |
| 18/12/2023 | 18 | Olympique Lyon | €1.00m |
| 04/06/2024 | 18 | RWD Molenbeek | €1.00m |
| 07/10/2024 | 19 | RC Strasbourg Alsace | €5.00m |
| 10/12/2024 | 19 | RC Strasbourg Alsace | €8.00m |
| 24/03/2025 | 19 | RC Strasbourg Alsace | €15.00m |
| 03/06/2025 | 19 | RC Strasbourg Alsace | €20.00m |
| 15/12/2025 | 20 | RC Strasbourg Alsace | €25.00m |
| 03/06/2026 | 20 | Chelsea FC | €22.00m |
xG Statistics
Mamadou Sarr's xG Statistics block is an Understat shot model for the 2026 season. It does not replace goals and assists — it explains them. xG and xA ask whether the chances were good enough; xGChain and xGBuildup show how often the player was on the ball in moves that became shots. Use minutes as the denominator: a large xG in 80 minutes is a hot streak, the same xG over 1,200 minutes is a role. Figures are rounded to two decimals and stay empty when Understat has no match for this player.
| Season | League | Club | Apps | Min | G | xG | npxG | A | xA | Sh | KP | xGChain |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | La liga | Real Sociedad | 1 | 61 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0.08 |
What the columns mean
Read this table as chance quality, not as a scoreboard. A player can outscore xG (finishing well) or lag behind it (missed sitters). Compare rows only when minutes are in the same range.
Apps· Appearances- Matches in which the player was used in this league season, including substitute minutes.
Min· Minutes- Total minutes on the pitch. Useful when comparing output: 1 goal in 90 minutes is not the same as 1 goal in 800.
G· Goals- Goals credited to the player in the Understat shot model for that season.
xG· Expected goals- The quality of shots the player took, expressed as the number of goals an average finisher would score from the same chances. A 0.30 xG shot is a chance that goes in about 3 times in 10.
npxG· Non-penalty xG- Expected goals with penalties removed. This is the cleaner read of open-play and set-piece finishing, because a penalty is usually ~0.76 xG by itself.
A· Assists- Goals that followed the player's last pass. Actual assists, not the model.
xA· Expected assists- The xG value of shots that came directly from the player's key passes. High xA with few assists usually means teammates missed good chances.
Sh· Shots- Total shots recorded by Understat, including blocked and off-target attempts.
KP· Key passes- Passes that led to a shot. This is the volume behind xA.
xGChain· xG chain- Team xG from possessions the player touched. It captures involvement in build-up, not only the shot or the last pass. A midfielder who starts attacks can rank high here without scoring.
xGBuildup· xG buildup- The same possession xG, but excluding the shot-taker and the assist. This is the purest 'how much did this player help create the chance before the final ball' number.
NPG· Non-penalty goals- Goals scored from open play or set pieces, excluding penalties.







