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| Piłkarz (wiek) | Z klubu | Do klubu | Data | Kwota | |||
|---|---|---|---|---|---|---|---|
| Show/hide all additional info | Kwoty w euro (EUR) | ||||||
| 1 |  |  J. St. Juste (22) |  Feyenoord |  Mainz | 2019, sie | 9 000 000 | |
| 2 | |  J. Mateta (21) |  Lyon | Mainz | 2018, lip | 8 000 000 | |
| 3 | |  E. Fernandes (23) |  West Ham | Mainz | 2019, lip | 7 500 000 | |
| 4 | |  P. Kunde (23) |  Atlético | Mainz | 2018, lip | 7 500 000 | |
| 5 | | L. Ajorque (28) |  Racing Strasbourg | Mainz | 2023, sty | 6 000 000 | |
| 6 | | A. Fulgini (25) |  Angers | Mainz | 2022, lip | 6 000 000 | |
| 7 | |  A. Caricol (22) |  Espanyol | Mainz | 2019, lip | 6 000 000 | |
| 8 | |  M. Niakhaté (22) |  Metz | Mainz | 2018, lip | 6 000 000 | |
| 9 | | R. Pierre-Gabriel (21) |  Monaco | Mainz | 2019, lip | 5 500 000 | |
| 10 | |  T. Krauß (22) |  RB Lipsk | Mainz | 2023, lip | 5 000 000 | |