Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2025 |  | Aboubaka Soumahoro | DF |  | Paris FC | Paris FC |
| 02/2025 |  | Alexander Røssing-Lelesiit | FW |  | Lillestrøm SK | LSK |
| 02/2025 |  | Joel Agyekum | DF |  | Hamburger SV II | Hamburg II |
| 02/2025 | | Milad Nejad | MF | | Hamburger SV II | Hamburg II |
| 01/2025 |  | Adedire Mebude | FW |  | KVC Westerlo | KVC Westerlo |
| 11/2024 | | Jan Hasenkamp | AT-C | | Hamburger SV II | Hamburg II |
| 11/2024 | | Loïc Favé | AS-CO | | Hamburger SV II | Hamburg II |
| 11/2024 | | Richard Krohn | AS-CO | | Hamburger SV II | Hamburg II |
| 09/2024 |  | Kevin McKenna | AS-CO | |||
| 08/2024 | | Lucas Perrin | DF |  | Racing Strasbourg | Strasbourg |
| 08/2024 |  | Emir Sahiti | FW |  | Hajduk Split | Hajduk |
| 08/2024 | | Marco Richter | MF |  | 1. FSV Mainz 05 | Mainz 05 |
| 08/2024 |  | Silvan Hefti | DF |  | Genoa CFC | Genoa CFC |
| 07/2024 | | Davie Selke | FW |  | 1. FC Köln | Köln |
| 07/2024 |  | Adam Karabec | MF |  | Sparta Prague | Sparta Prague |
| 07/2024 | | Hannes Hermann | GK |  | Hamburger SV U19 | Hamburg U19 |
| 07/2024 |  | Marko Johansson | GK |  | Hansa Rostock | Rostock |
| 07/2024 | | Jonas David | DF | | Hansa Rostock | Rostock |
| 07/2024 | | Valon Zumberi | DF |  | FC Schaffhausen | FC Schaffhausen |
| 07/2024 |  | Daniel Elfadli | MF |  | 1. FC Magdeburg | Magdeburg |
| 07/2024 | | Fabio Baldé | FW | | Hamburger SV U19 | Hamburg U19 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2025 | | Lucas Perrin | DF |  | Cercle Brugge | Cercle |
| 01/2025 | | Moritz Heyer | DF |  | Fortuna Düsseldorf | Düsseldorf |
| 01/2025 |  | Anssi Suhonen | MF |  | Jahn Regensburg | Regensburg |
| 09/2024 |  | Guilherme Ramos | DF |  | CD Santa Clara | CD Santa Clara |
| 08/2024 |  | András Németh | FW |  | Preußen Münster | Pr. Münster |
| 08/2024 | | Marko Johansson | GK |  | Eintracht Braunschweig | Braunschweig |
| 07/2024 | | Tom Sanne | FW |  | Hannover 96 II | Hannover II |
| 07/2024 |  | Stephan Ambrosius | DF |  | FC St. Gallen | St.Gallen |
| 07/2024 |  | Ignace Van Der Brempt | DF |  | RB Salzburg | RB Salzburg |
| 07/2024 |  | László Bénes | MF |  | 1. FC Union Berlin | Union Berlin |
| 07/2024 | | Elijah Krahn | MF |  | 1. FC Saarbrücken | Saarbrücken |
| 07/2024 |  | Masaya Okugawa | MF |  | FC Augsburg | Augsburg |
| 07/2024 | | Loïc Favé | AS-CO | | Hamburger SV II | Hamburg II |
| 07/2024 | | Dirk Folkerts | G-AN |  | RB Leipzig | RB Leipzig |