New signings:
Filip Bilbija (HSV, 500k)
Visar Musliu (Ingolstadt)
Ilyas Ansah (U19)
Max Kruse (Free agent)
Florian Pruhs (U17)
Maximilian Rohr (HSV, 500k)
Dawyn-Paul Donner (U23)
Kimberly Ezekwem (Freiburg, loan)
Laurin Curda (TSG Balingen)
Mattes Hansen (Schalke U19)
David Kinsombi (Sandhausen)
Adriano Grimaldi (Saarbrücken)
Arne Schulz (Bielefeld)
Jesse Tugbenyo, Justus Henke and Marcel Mehlem returned from their loan spells

Outgoings:
Jasper van der Werff (Rostock, loan)
Richmond Tachie (Kaiserslautern)
Robin Bormuth (Karlsruhe)
Ron Schallenberg (Schalke, 2 million)
Julian Justvan (Hoffenheim, 1,5 million)
Moritz Schulze (Halle)
Jonas Carls (W. Mannheim)
Dennis Srbeny (Fürth)
Leopold Zingerle (RB Leipzig)
Uwe Hünemeier (retired)
Marvin Pieringer, Bashir Humphreys (end of loan)