Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 01.07.2021 | L. Öztunalı | FSV Mainz 05 | Union Berlin | Free |
| 30.06.2021 | R. Glatzel | FSV Mainz 05 | — | N/A |
| 10.06.2021 | M. Mustapha | FSV Mainz 05 | — | Loan |
| 29.01.2021 | Ji Dong-Won | FSV Mainz 05 | — | Loan |
| 21.01.2021 | J. Mateta | FSV Mainz 05 | Crystal Palace | Loan |
| 18.01.2021 | D. Lavalée | FSV Mainz 05 | St. Truiden | Loan |
| 04.01.2021 | Aarón Martín | FSV Mainz 05 | Celta Vigo | Loan |
| 04.01.2021 | I. Abass | FSV Mainz 05 | Twente | Loan |
| 01.10.2020 | R. Baku | FSV Mainz 05 | VfL Wolfsburg | € 10M |
| 15.09.2020 | F. Müller | FSV Mainz 05 | SC Freiburg | Loan |
| 24.08.2020 | G. Holtmann | FSV Mainz 05 | VfL Bochum | N/A |
| 06.08.2020 | J. Meier | FSV Mainz 05 | — | Loan |
| 06.08.2020 | A. Seydel | FSV Mainz 05 | SV Darmstadt 98 | N/A |
| 01.08.2020 | A. Maxim | FSV Mainz 05 | Gazişehir Gaziantep | Free |
| 07.07.2020 | R. Pierre-Gabriel | FSV Mainz 05 | Stade Brestois 29 | Loan |
| 01.07.2020 | J. Bruma | FSV Mainz 05 | VfL Wolfsburg | N/A |
| 28.01.2020 | A. Maxim | FSV Mainz 05 | Gazişehir Gaziantep | Loan |
| 11.01.2020 | A. Seydel | FSV Mainz 05 | — | Loan |
| 16.12.2019 | G. Donati | FSV Mainz 05 | Lecce | Free |
| 02.08.2019 | J. Gbamin | FSV Mainz 05 | Everton | € 25M |
| 17.07.2019 | E. Berggreen | FSV Mainz 05 | Twente | Free |
| 01.07.2019 | Karl-Heinz Lappe | FSV Mainz 05 | — | N/A |
| 01.07.2019 | I. Abass | FSV Mainz 05 | Utrecht | Loan |
| 01.07.2019 | A. Ujah | FSV Mainz 05 | Union Berlin | € 2M |
| 01.07.2019 | G. Holtmann | FSV Mainz 05 | — | Loan |
| 01.07.2019 | Aarón Martín | FSV Mainz 05 | FSV Mainz 05 | € 6M |
| 01.07.2019 | J. Huth | FSV Mainz 05 | — | N/A |
| 30.08.2018 | B. Halimi | FSV Mainz 05 | Brondby | N/A |
| 30.08.2018 | P. De Blasis | FSV Mainz 05 | — | € 2M |
| 07.08.2018 | A. Seydel | FSV Mainz 05 | Holstein Kiel | Loan |
| 02.08.2018 | Y. Muto | FSV Mainz 05 | Newcastle | N/A |
| 03.07.2018 | K. Kodro | FSV Mainz 05 | FC Copenhagen | € 1.6M |
| 01.07.2018 | L. Balogun | FSV Mainz 05 | Brighton | Free |
| 01.07.2018 | Nigel de Jong | FSV Mainz 05 | — | Free |
| 01.07.2018 | Noah Samuel Korczowski | FSV Mainz 05 | — | Free |
| 01.07.2018 | K. Bülbül | FSV Mainz 05 | — | Free |
| 01.07.2018 | A. Diallo | FSV Mainz 05 | Borussia Dortmund | € 28M |
| 01.07.2018 | M. Šverko | FSV Mainz 05 | — | Loan |
| 01.07.2018 | H. Mörschel | FSV Mainz 05 | Holstein Kiel | N/A |
| 01.07.2018 | J. Lössl | FSV Mainz 05 | — | N/A |
| 01.07.2018 | S. Serdar | FSV Mainz 05 | FC Schalke 04 | € 11M |
| 14.02.2018 | K. Kodro | FSV Mainz 05 | Grasshoppers | Loan |
| 01.02.2018 | V. Fischer | FSV Mainz 05 | FC Copenhagen | € 2.4M |
| 31.01.2018 | J. Huth | FSV Mainz 05 | Sparta Rotterdam | Loan |
| 29.01.2018 | G. Bussmann | FSV Mainz 05 | SC Freiburg | Loan |
| 23.01.2018 | P. Klement | FSV Mainz 05 | — | N/A |
| 18.01.2018 | G. Curci | FSV Mainz 05 | — | Free |
| 18.01.2018 | F. Frei | FSV Mainz 05 | FC Basel 1893 | € 1.5M |
| 02.01.2018 | M. Costly | FSV Mainz 05 | — | N/A |
| 01.01.2018 | Jairo Samperio | FSV Mainz 05 | Las Palmas | € 315K |