New signings
- Pascal Stenzel (SC Freiburg)
- Konstantions Mavropanos (FC Arsenal)
- Waldemar Anton (Hannover 96)
- Gregor Kobel (TSG Hoffenheim)
- Erik Thommy (Fortuna Düsseldorf, end of loan)
- Ailton (Qarabag, end of loan)
Departures
- Mario Gomez (end of his career)
- Chadrac Akolo (SC Amiens)
- Anastasios Donis (Stade Reims)
- Nathaniel Phillips (Liverpool FC, end of loan)
- David Kopacz (FC Würzburger Kickers)
- Nikolas Nartey (SV Sandhausen, on loan)