Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 05.02.2026 | E. Kujovic | 1. FC Köln | Wolfsberger AC | Loan |
| 26.01.2026 | I. Rondić | 1. FC Köln | — | Loan |
| 13.01.2026 | C. Onuoha | 1. FC Köln | Estrela | Transfer |
| 12.01.2026 | C. Onuoha | 1. FC Köln | Estrela | Transfer |
| 08.01.2026 | Y. Niang | 1. FC Köln | 1. FC Köln | Raise |
| 05.01.2026 | Neo Telle | 1. FC Köln | — | Transfer |
| 04.01.2026 | Neo Telle | 1. FC Köln | — | Transfer |
| 31.12.2025 | J. Gazibegović | 1. FC Köln | Sturm Graz | Loan |
| 02.09.2025 | I. Rondić | 1. FC Köln | Raków Częstochowa | Loan |
| 01.09.2025 | I. Rondić | 1. FC Köln | Raków Częstochowa | Loan |
| 01.09.2025 | J. Christensen | 1. FC Köln | — | Transfer |
| 30.08.2025 | J. Christensen | 1. FC Köln | — | Transfer |
| 29.08.2025 | Julian Andreas Pauli | 1. FC Köln | — | Loan |
| 28.08.2025 | Julian Andreas Pauli | 1. FC Köln | — | Loan |
| 28.08.2025 | L. Paqarada | 1. FC Köln | 1. FC Heidenheim | Transfer |
| 27.08.2025 | N. Bajlicz | 1. FC Köln | Ried | - |
| 27.08.2025 | L. Paqarada | 1. FC Köln | 1. FC Heidenheim | Transfer |
| 26.08.2025 | L. Paqarada | 1. FC Köln | 1. FC Heidenheim | Transfer |
| 26.08.2025 | F. Dietz | 1. FC Köln | — | Transfer |
| 07.08.2025 | M. Ouro-Tagba | 1. FC Köln | — | Free agent |
| 06.08.2025 | S. Tigges | 1. FC Köln | — | Transfer |
| 05.08.2025 | S. Tigges | 1. FC Köln | — | Transfer |
| 04.08.2025 | S. Tigges | 1. FC Köln | — | Transfer |
| 27.07.2025 | P. Wydra | 1. FC Köln | — | Free agent |
| 16.07.2025 | Malik Yilmaz | 1. FC Köln | — | Free agent |
| 15.07.2025 | Malik Yilmaz | 1. FC Köln | — | Free agent |
| 09.07.2025 | D. Downs | 1. FC Köln | Southampton | Transfer |
| 08.07.2025 | J. PotoÄnik | 1. FC Köln | — | Loan |
| 08.07.2025 | N. Soldo | 1. FC Köln | — | Free agent |
| 07.07.2025 | D. Downs | 1. FC Köln | Southampton | Transfer |
| 07.07.2025 | R. Carstensen | 1. FC Köln | Aarhus | Loan |
| 03.07.2025 | Max Finkgräfe | 1. FC Köln | RB Leipzig | Transfer |
| 02.07.2025 | Max Finkgräfe | 1. FC Köln | RB Leipzig | Transfer |
| 02.07.2025 | O. Schmitt | 1. FC Köln | — | Free agent |
| 01.07.2025 | M. Olesen | 1. FC Köln | — | Free Transfer |
| 01.07.2025 | D. Ljubičić | 1. FC Köln | Dinamo Zagreb | Free Transfer |
| 01.07.2025 | A. Racioppi | 1. FC Köln | — | N/A |
| 01.07.2025 | T. Lemperle | 1. FC Köln | 1899 Hoffenheim | Free Transfer |
| 30.06.2025 | G. Strauch | 1. FC Köln | — | Free agent |
| 30.06.2025 | M. Sponsel | 1. FC Köln | — | Free agent |
| 30.06.2025 | J. Nickisch | 1. FC Köln | — | Free agent |
| 30.06.2025 | M. Obuz | 1. FC Köln | — | Free agent |
| 30.06.2025 | T. Lemperle | 1. FC Köln | 1899 Hoffenheim | Free agent |
| 29.06.2025 | Justin-Kai von der Hitz | 1. FC Köln | — | Free agent |
| 30.01.2025 | M. Schmid | 1. FC Köln | — | Transfer |
| 30.01.2025 | M. Wäschenbach | 1. FC Köln | — | Transfer |
| 29.01.2025 | M. Schmid | 1. FC Köln | — | Transfer |
| 28.01.2025 | R. Carstensen | 1. FC Köln | Lech Poznan | Loan |
| 27.01.2025 | J. Urbig | 1. FC Köln | Bayern München | Transfer |
| 08.01.2025 | E. Bakatukanda | 1. FC Köln | FC BW Linz | Loan |