1. FSV Mainz 05
| Player | Position | Value (M€) | Year | Contract |
|---|---|---|---|---|
  Jonathan Burkardt | 9. Forward | 17 | 2000 | 2024 |
  Ludovic Ajorque | 9. Forward | 15 | 1994 | 2026 |
  Leandro Barreiro | 6. Central Midfielder | 11 | 2000 | 2024 |
 Dominik Kohr | 6. Central Midfielder | 6 | 1994 | 2026 |
 Robin Zentner | 1. Goalkeeper | 5 | 1994 | 2025 |
  Silvan Widmer | 2. Right back | 5 | 1993 | 2026 |
 Anthony Caci | 3. Left back | 5 | 1997 | 2026 |
 Anton Stach | 5. Defensive Midfielder | 4 | 1998 | 2024 |
 Josuha Guilavogui | 5. Defensive Midfielder | 4 | 1990 | 2024 |
 Danny da Costa | 2. Right back | 3.5 | 1993 | 2025 |
  Jae-sung Lee | 7. Attacking Midfielder | 3.5 | 1992 | 2026 |
  Karim Onisiwo | 9. Forward | 3.5 | 1992 | 2026 |
 Stefan Bell | 4. Centre back | 2.5 | 1991 | 2024 |
 Maxim Leitsch | 4. Centre back | 2.5 | 1998 | 2026 |
 Alexander Hack | 4. Centre back | 2.5 | 1993 | 2024 |
  Aymen Barkok | 7. Attacking Midfielder | 2 | 1998 | 2025 |
  Delano Burgzorg | 8. Left Winger | 0.7 | 1998 | 2025 |
  Andreas Hanche-Olsen | 4. Centre back | - | 1997 | 2026 |
| Edimilson Fernandes | 6. Central Midfielder | - | 1996 | 2026 |
| Nelson Weiper | 9. Forward | - | 2005 | 2025 |