| Player | Position | Value |
|---|---|---|
| Niklas Kolbe | DL | 3.9M |
| Leon Jensen | DM | 3.6M |
| Paul Seguin | DM | 2.4M |
| Marten Winkler | ML | 8.1M |
| Deyovaisio Zeefuik | DL | 10.0M |
| Player | From | Fee | Date |
|---|---|---|---|
| Gonzalez Derlis | Free Agent | Free | 20.08.2027 |
| Kaiser Leon | Free Agent | Free | 23.08.2027 |
| Baumann Karl | Free Agent | Free | 23.08.2027 |
| Horn Michael | Free Agent | Free | 23.08.2027 |
| Keller Tim | Free Agent | Free | 23.08.2027 |
| Brandt Lukas | Free Agent | Free | 23.08.2027 |
| Usami Takashi | FC Augsburg | 170.0K | 25.08.2027 |
| Kühn Jonas | Free Agent | Free | 06.09.2027 |
| Stein Christoph | Free Agent | Free | 06.09.2027 |
| Wolff Hans | Free Agent | Free | 06.09.2027 |
| Werner Alexander | Free Agent | Free | 06.09.2027 |
| Schulze Lukas | Free Agent | Free | 06.09.2027 |
| Collins Nnamdi | Free Agent | Free | 06.09.2027 |
| Dahl Samuel | Free Agent | Free | 19.09.2027 |
| Hranáč Robin | Free Agent | Free | 12.10.2027 |
| Gómez Sergio | Free Agent | Free | 07.11.2027 |
| Miyoshi Koji | VfL Bochum | 450.0K | 08.01.2028 |
| Ritzka Lars | Preußen Münster | 2.7M | 10.01.2028 |
| Tikvić Antonio | Preußen Münster | 3.4M | 10.01.2028 |
| Agoumé Lucien | Free Agent | Free | 07.02.2028 |
| Player | To | Fee | Date |
|---|---|---|---|
| Berner Janne | Free Agent | Free | 01.09.2027 |
| Demme Diego | Free Agent | Free | 01.09.2027 |
| Dudziak Jeremy | Free Agent | Free | 01.09.2027 |
| Cuisance Michaël | Free Agent | Free | 01.09.2027 |
| Brooks John | Free Agent | Free | 01.09.2027 |
| Sessa Kevin | Free Agent | Free | 01.09.2027 |
| Karbownik Michał | Free Agent | Free | 01.09.2027 |
| Telib Selim | Free Agent | Free | 01.09.2027 |
| Gottschalk Julius | Free Agent | Free | 01.09.2027 |
| Heide Konstantin | Free Agent | Free | 01.09.2027 |
| Ünal Yunus | Free Agent | Free | 01.09.2027 |
| Peters Jan | Free Agent | Free | 01.09.2027 |
| Schreiber Leon | Free Agent | Free | 01.09.2027 |
| Eitschberger Julian | Free Agent | Free | 01.02.2028 |
| Schulz Peter | Free Agent | Free | 01.02.2028 |