Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 04/2015 |  | Grischa Prömel | MF |  | TSG Hoffenheim II | Hoffenheim II |
| 01/2015 | | Nicolai Rapp | DF |  | TSG Hoffenheim U19 | Hoffenheim U19 |
| 01/2015 | | Michael Rechner | GK-CO | | TSG Hoffenheim II | Hoffenheim II |
| 01/2015 |  | Guilherme Biteco | MF |  | Vasco da Gama - RJ | Vasco da Gama |
| 08/2014 |  | Steven Zuber | MF |  | CSKA Moskva | CSKA Moskva |
| 07/2014 | | Oliver Baumann | GK |  | SC Freiburg | Freiburg |
| 07/2014 | | Marvin Schwäbe | GK | | TSG Hoffenheim U19 | Hoffenheim U19 |
| 07/2014 |  | Ermin Bičakčić | DF |  | Eintracht Braunschweig | Braunschweig |
| 07/2014 |  | Jin-su Kim | DF |  | Albirex Niigata | Albirex Niigata |
| 07/2014 | | Nadiem Amiri | MF | | TSG Hoffenheim II | Hoffenheim II |
| 07/2014 |  | Vincenzo Grifo | MF |  | Dynamo Dresden | Dresden |
| 07/2014 | | Janik Haberer | MF |  | SpVgg Unterhaching | U'haching |
| 07/2014 |  | Filip Malbašić | MF |  | Partizan | Partizan |
| 07/2014 | | Pirmin Schwegler | MF |  | Eintracht Frankfurt | E. Frankfurt |
| 07/2014 | | Tobias Weis | MF | | Eintracht Frankfurt | E. Frankfurt |
| 07/2014 |  | Knowledge Musona | FW |  | Kaizer Chiefs | Kaizer Chiefs |
| 07/2014 |  | Ádám Szalai | FW |  | FC Schalke 04 | Schalke |
| 07/2014 | | Christian Neitzert | RE-C | | TSG Hoffenheim II | Hoffenheim II |
| 07/2014 | | Bernd Steinhoff | RE-C |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2015 | | Guilherme Biteco | MF |  | Santa Cruz - PE | Santa Cruz |
| 01/2015 |  | Jiloan Hamad | MF |  | Standard Liège | Standard Liège |
| 01/2015 |  | Jannik Vestergaard | DF |  | Werder Bremen | Werder |
| 01/2015 |  | Koen Casteels | GK | | Werder Bremen | Werder |
| 01/2015 | | Knowledge Musona | FW |  | KV Oostende | KV Oostende |
| 01/2015 | | Zsolt Petry | GK-CO | | TSG Hoffenheim II | Hoffenheim II |
| 09/2014 | | Tobias Weis | MF |  | VfL Bochum | Bochum |
| 08/2014 | | Bruno Nazário | MF |  | Lechia Gdańsk | Lechia Gdańsk |
| 08/2014 | | Filip Malbašić | MF | | Lechia Gdańsk | Lechia Gdańsk |
| 07/2014 | | Vincenzo Grifo | MF |  | FSV Frankfurt | FSV Frankf. |
| 07/2014 | | Tim Paterok | GK |  | Wormatia Worms | Worms |
| 07/2014 |  | Edson Braafheid | DF |  | Lazio Roma | Lazio |
| 07/2014 |  | Fabian Johnson | DF |  | Bor. Mönchengladbach | M'gladbach |
| 07/2014 | | Robin Szarka | DF |  | Energie Cottbus | Cottbus |
| 07/2014 | | Stefan Thesker | DF |  | Hannover 96 | Hannover |
| 07/2014 | | Joe Gyau | MF |  | Borussia Dortmund II | Dortmund II |
| 07/2014 |  | Kenan Karaman | FW | | Hannover 96 | Hannover |
| 07/2014 | | Kai Kraft | AT-C |  | RB Leipzig | RB Leipzig |