| 30 Aug 24 | S. Haller Sébastien Haller |  Borussia DortmundDOR | → |  LeganésLEG | Loan |
| 29 Aug 24 | S. Coulibaly Soumaila Coulibaly | Borussia DortmundDOR | → |  BrestBRE | Loan |
| 28 Aug 24 | S. Özcan Salih Özcan | Borussia DortmundDOR | → |  VfL WolfsburgWOB | Loan |
| 28 Aug 24 | Y. Moukoko Youssoufa Moukoko | Borussia DortmundDOR | → |  NiceNICE | Loan |
| 20 Aug 24 | A. Kamara Abdoulaye Kamara | Borussia DortmundDOR | → |  PortsmouthPOR | Undisclosed |
| 12 Aug 24 | M. Beier Maximilian Beier |  TSG HoffenheimTSG | → | Borussia DortmundDOR | Undisclosed |
| 07 Aug 24 | T. Rothe Tom Rothe | Borussia DortmundDOR | → |  1. FC Union BerlinFCU | Undisclosed |
| 05 Aug 24 | N. Füllkrug Niclas Füllkrug | Borussia DortmundDOR | → |  West Ham UnitedWHU | Undisclosed |
| 03 Aug 24 | Y. Couto Yan Couto |  Manchester CityMNC | → | Borussia DortmundDOR | Loan |
| 01 Aug 24 | P. Groß Pascal Groß |  Brighton & Hove AlbionBHA | → | Borussia DortmundDOR | Undisclosed |
| 18 Jul 24 | S. Guirassy Serhou Guirassy |  VfB StuttgartVFB | → | Borussia DortmundDOR | Undisclosed |
| 08 Jul 24 | W. Anton Waldemar Anton | VfB StuttgartVFB | → | Borussia DortmundDOR | Undisclosed |
| 05 Jul 24 | M. Morey Mateu Morey | Borussia DortmundDOR | → |  MallorcaMLL | Free |
| 02 Jul 24 | O. Pohlmann Ole Pohlmann | Borussia DortmundDOR | → |  Rio AveRIO | Undisclosed |
| 07 Feb 24 | T. Meunier Thomas Meunier | Borussia DortmundDOR | → |  TrabzonsporTRAB | Undisclosed |
| 01 Feb 24 | J. Rijkhoff Julian Rijkhoff | Borussia DortmundDOR | → |  Ajax AmsterdamAJA | Undisclosed |
| 01 Feb 24 | H. Blank Hendry Blank | Borussia DortmundDOR | → |  RB SalzburgSLZ | Undisclosed |
| 31 Jan 24 | G. Reyna Giovanni Reyna | Borussia DortmundDOR | → |  Nottingham ForestNFO | Loan |
| 12 Jan 24 | I. Maatsen Ian Maatsen |  ChelseaCHE | → | Borussia DortmundDOR | Loan |
| 11 Jan 24 | J. Sancho Jadon Sancho |  Manchester UnitedMAN | → | Borussia DortmundDOR | Loan |