In
Dominique Heintz (def) (Köln), Luca Waldschmidt (att) (Hamburger SV), Philipp Lienhart (def) (Real Madrid – Loan Made Permanent), Jerome Gondorf (mid) (Werder Bremen), Mark Flekken (gk) (MSV Duisburg), Brandon Borello (mid) (Kaiserslautern),
Out
Jonas Föhrenbach (sp) (def) (Jahn Regensburg – Loan), Aleksandar Ignjovski (sp)(def) (FC Magdeburg), Mats Möller Daehli (sp)(mid) (St. Pauli – Loan Made Permanent), Rafal Gikiewicz (sp)(gk) (Union Berlin), Vincent Sierro (sp)(mid) (St. Gallen – Loan), Lucas Hufnagel (mid) (Unterhaching), Marc-Oliver Kempf (r)(def) (VfB Stuttgart), Georg Niedermeier (sp)(def) (released), Karim Guede (sp)(att) (Sandhausen), Mohamed Dräger (mid) (Paderborn – Loan), Fabiabn Schleusener (att) (Sandhausen – Loan), Julian Schuster (sp)(mid) (Retired), Patric Klandt (sp)(gk) (Released), Bartosz Kapustka (mid) (Leicester City – End of Loan), Gaëtan Bussmann (sp)(def) (FSV Mainz – End of Loan), Jonas Meffert (sp)(mid) (Holstein Kiel), Caglar Soyuncu (r)(def) (Leicester City),