Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 29.01.2026 | M. LjubiÄiÄ | Union Berlin | Fortuna Düsseldorf | Loan |
| 02.01.2026 | Oluwaseun God Power Osaro Ogbemudia | Union Berlin | — | Loan |
| 31.12.2025 | M. Torrejon | Union Berlin | — | - |
| 27.11.2025 | J. Roussillon | Union Berlin | — | Free agent |
| 01.09.2025 | L. Tousart | Union Berlin | Stade Brestois 29 | Transfer |
| 31.08.2025 | L. Tousart | Union Berlin | Stade Brestois 29 | - |
| 31.08.2025 | A. Schwolow | Union Berlin | Heart Of Midlothian | Free Transfer |
| 31.08.2025 | Y. Stein | Union Berlin | — | Loan |
| 30.08.2025 | Y. Stein | Union Berlin | — | Loan |
| 30.08.2025 | L. Tousart | Union Berlin | Stade Brestois 29 | - |
| 30.08.2025 | A. Schwolow | Union Berlin | Heart Of Midlothian | Free agent |
| 16.08.2025 | L. Bénes | Union Berlin | Kayserispor | Loan |
| 15.08.2025 | L. Bénes | Union Berlin | Kayserispor | Loan |
| 15.07.2025 | P. Jaeckel | Union Berlin | — | Transfer |
| 14.07.2025 | P. Jaeckel | Union Berlin | — | Transfer |
| 13.07.2025 | P. Jaeckel | Union Berlin | — | Transfer |
| 08.07.2025 | L. Grill | Union Berlin | — | Transfer |
| 07.07.2025 | L. Grill | Union Berlin | — | Transfer |
| 07.07.2025 | K. Vogt | Union Berlin | VfL Bochum | Transfer |
| 06.07.2025 | K. Vogt | Union Berlin | VfL Bochum | Transfer |
| 05.07.2025 | K. Vogt | Union Berlin | VfL Bochum | Transfer |
| 01.07.2025 | K. Volland | Union Berlin | — | Free |
| 01.07.2025 | I. Prtajin | Union Berlin | — | Transfer |
| 01.07.2025 | R. Gosens | Union Berlin | Fiorentina | Transfer |
| 01.07.2025 | A. Ilić | Union Berlin | Lille | N/A |
| 01.07.2025 | Jeong Woo-Yeong | Union Berlin | Union Berlin | Transfer |
| 30.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 30.06.2025 | Andrik Markgraf | Union Berlin | Union Berlin | Free agent |
| 30.06.2025 | K. Volland | Union Berlin | — | - |
| 30.06.2025 | I. Prtajin | Union Berlin | — | Transfer |
| 29.06.2025 | A. Ilić | Union Berlin | Lille | Return from loan |
| 29.06.2025 | J. Roussillon | Union Berlin | — | Free agent |
| 29.06.2025 | R. Gosens | Union Berlin | Fiorentina | Transfer |
| 29.06.2025 | Jeong Woo-Yeong | Union Berlin | VfB Stuttgart | Return from loan |
| 29.06.2025 | J. Roussillon | Union Berlin | — | Free agent |
| 29.06.2025 | A. Schwolow | Union Berlin | Heart Of Midlothian | Free agent |
| 29.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 29.06.2025 | I. Prtajin | Union Berlin | — | Transfer |
| 01.06.2025 | B. Hollerbach | Union Berlin | FSV Mainz 05 | Transfer |
| 03.02.2025 | Y. Vertessen | Union Berlin | Red Bull Salzburg | Transfer |
| 03.02.2025 | J. Siebatcheu | Union Berlin | Reims | Transfer |
| 02.02.2025 | C. Bedia | Union Berlin | BSC Young Boys | Loan |
| 01.02.2025 | Y. Vertessen | Union Berlin | Red Bull Salzburg | Transfer |
| 28.01.2025 | Y. Stein | Union Berlin | — | Loan |
| 22.01.2025 | L. Grill | Union Berlin | — | Loan |
| 30.08.2024 | R. Gosens | Union Berlin | Fiorentina | Loan |
| 29.08.2024 | P. Jaeckel | Union Berlin | — | Loan |
| 22.08.2024 | C. Bedia | Union Berlin | — | Loan |
| 07.08.2024 | A. Král | Union Berlin | Espanyol | Loan |
| 02.08.2024 | T. Puchacz | Union Berlin | Holstein Kiel | N/A |