Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2013 |  | Denis Streker | MF |  | TSG Hoffenheim II | Hoffenheim II |
| 01/2013 |  | Dmitri Khlebosolov | FW |  | Spartak Moskva 2 | Spartak 2 |
| 01/2013 | | Tobias Kempe | MF |  | SC Paderborn 07 | Paderborn |
| 12/2012 |  | Peter Pacult | MA | |||
| 12/2012 | | Steffen Menze | MA | |||
| 08/2012 | | Tobias Jänicke | MF |  | Hansa Rostock | Rostock |
| 08/2012 |  | Lynel Kitambala | FW |  | AS Saint-Étienne | Saint-Étienne |
| 08/2012 |  | Petar Slišković | FW |  | 1. FSV Mainz 05 | Mainz 05 |
| 07/2012 | | Florian Fromlowitz | GK |  | MSV Duisburg | Duisburg |
| 07/2012 | | Markus Scholz | GK |  | VfL Bochum | Bochum |
| 07/2012 | | Cüneyt Köz | DF |  | Bayern München II | Bayern II |
| 07/2012 | | Bjarne Thoelke | DF |  | VfL Wolfsburg | Wolfsburg |
| 07/2012 | | Anthony Losilla | MF |  | Stade Lavallois | Laval |
| 07/2012 | | Idir Ouali | MF |  | Le Mans FC | Le Mans |
| 07/2012 | | Tobias Müller | FW |  | Dynamo Dresden U19 | Dynamo Dresden U19 |
| 07/2012 |  | Hasan Pepić | FW |  | Karlsruher SC II | Karlsruhe II |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2013 | | Hasan Pepić | FW |  | Juventus U19 | Juventus U19 |
| 01/2013 | | Cüneyt Köz | DF |  | Preußen Münster | Pr. Münster |
| 01/2013 | | Petar Slišković | FW | | 1. FSV Mainz 05 | Mainz 05 |
| 01/2013 | | Toni Leistner | DF |  | Hallescher FC | Hallescher FC |
| 08/2012 | | Jens Möckel | DF |  | Rot-Weiß Erfurt | Erfurt |
| 07/2012 | | Wolfgang Hesl | GK |  | SpVgg Greuther Fürth | Gr. Fürth |
| 07/2012 | | Martin Stoll | DF |  | Karlsruher SC | Karlsruhe |
| 07/2012 | | Maik Kegel | MF |  | Chemnitzer FC | Chemnitz |
| 07/2012 | | Marvin Knoll | MF |  | Hertha BSC | Hertha BSC |
| 07/2012 | | Sascha Pfeffer | MF | | Chemnitzer FC | Chemnitz |
| 07/2012 | | Clemens Walch | MF |  | SV Ried | SV Ried |
| 07/2012 |  | Zlatko Dedič | FW | | VfL Bochum | Bochum |
| 07/2012 | | Marcel Heller | FW |  | Alemannia Aachen | Aachen |