Ajouts
| De | Nom | Pos | Équipe | Équipe | ||
|---|---|---|---|---|---|---|
| 01/2026 |  | Kennedy Okpala | A |  | Waldhof Mannheim | Waldhof Mannh. |
| 09/2025 | | Niklas Mohr | D |  | SG Sonnenhof Großaspach | Großaspach |
| 09/2025 | | Jonah Sticker | D |  | Viktoria Köln | Vikt. Köln |
| 08/2025 | | Kerem Yalcin | M |  | SC Paderborn 07 II | SC Paderborn 07 II |
| 08/2025 | | Steffen Tigges | A |  | 1. FC Köln | Köln |
| 07/2025 | | Stefano Marino | A |  | Hannover 96 II | Hannover II |
| 07/2025 | | Dennis Seimen | G |  | VfB Stuttgart | Stuttgart |
| 07/2025 | | Nick Bätzner | M |  | SV Wehen Wiesbaden | Wiesbaden |
| 07/2025 | | Bennit Bröger | M |  | VfL Wolfsburg | Wolfsburg |
| 07/2025 | | David Kinsombi | M |  | Preußen Münster | Pr. Münster |
| 07/2025 | | Ruben Müller | M |  | SC Freiburg II | Freiburg II |
| 07/2025 | | Joel Vega Zambrano | M | | SC Paderborn 07 II | SC Paderborn 07 II |
| 07/2025 | | Mika Baur | A |  | Dynamo Dresden | Dresden |
| 07/2025 | | Lucas Copado | A |  | Energie Cottbus | Cottbus |
| 07/2025 |  | Koen Kostons | A |  | KV Kortrijk | Kortrijk |
| 07/2025 | | Marco Wörner | A | | SC Freiburg II | Freiburg II |
| 07/2025 | | Ralf Kettemann | E |  | Karlsruher SC U19 | Karlsruhe U19 |
| 07/2025 | | Pit Reimers | EA | |||
| 07/2025 | | Andreas Herbstreit | REA | |||
| 07/2025 | | Julian Metzger | AN-J | | Karlsruher SC U19 | Karlsruhe U19 |
Aliénations
| De | Nom | Pos | Équipe | Équipe | ||
|---|---|---|---|---|---|---|
| 01/2026 | | Marco Wörner | A |  | SC Verl | Verl |
| 01/2026 | | Joel Vega Zambrano | M | | Viktoria Köln | Vikt. Köln |
| 09/2025 | | Adriano Grimaldi | A |  | 1. FC Nürnberg | Nürnberg |
| 07/2025 | | Luca Herrmann | M | | Dynamo Dresden | Dresden |
| 07/2025 | | Koen Kostons | A |  | PEC Zwolle | PEC Zwolle |
| 07/2025 | | Marvin Mehlem | M |  | Arminia Bielefeld | Bielefeld |
| 07/2025 | | Arne Schulz | G | | Viktoria Köln | Vikt. Köln |
| 07/2025 | | Jascha Brandt | D | | Waldhof Mannheim | Waldhof Mannh. |
| 07/2025 | | Martin Ens | D | | SC Verl | Verl |
| 07/2025 | | Tristan Zobel | D |  | Erzgebirge Aue | Aue |
| 07/2025 | | Medin Kojic | M | | SC Paderborn 07 II | SC Paderborn 07 II |
| 07/2025 | | Marco Pledl | M | | Viktoria Köln | Vikt. Köln |
| 07/2025 | | Aaron Zehnter | M | | VfL Wolfsburg | Wolfsburg |
| 07/2025 | | Ilyas Ansah | A |  | 1. FC Union Berlin | Union Berlin |
| 07/2025 | | Travis de Jong | A | | SC Paderborn 07 II | SC Paderborn 07 II |
| 07/2025 |  | Casper Terho | A |  | Union Saint-Gilloise | St. Gilloise |
| 07/2025 | | Łukasz Kwasniok | E | | 1. FC Köln | Köln |
| 07/2025 | | Frank Kaspari | EA | | 1. FC Köln | Köln |
| 07/2025 | | Nils Vogt | REA | | SC Verl | Verl |
| 07/2025 | | Eduard Schmidt | AN-J |  | Hannover 96 | Hannover |