Transfers
Recent player movements in and out of the squad
| Date | Player | From | To | Type |
|---|---|---|---|---|
| 01.07.2021 | R. Zieler | 1. FC Köln | — | N/A |
| 01.07.2021 | L. Sobiech | FC Zurich | 1. FC Köln | N/A |
| 01.07.2021 | T. Hübers | — | 1. FC Köln | Free |
| 01.07.2021 | M. Schwäbe | Brondby | 1. FC Köln | Free |
| 30.06.2021 | T. Ostrák | Karviná | 1. FC Köln | N/A |
| 30.06.2021 | M. Wolf | 1. FC Köln | Borussia Dortmund | N/A |
| 01.02.2021 | A. Modeste | 1. FC Köln | Saint Etienne | Loan |
| 27.01.2021 | M. Meyer | Crystal Palace | 1. FC Köln | Free |
| 26.01.2021 | E. Dennis | Club Brugge KV | 1. FC Köln | Loan |
| 20.01.2021 | F. Sørensen | 1. FC Köln | — | N/A |
| 15.01.2021 | C. Clemens | 1. FC Köln | SV Darmstadt 98 | N/A |
| 02.10.2020 | M. Wolf | Borussia Dortmund | 1. FC Köln | Loan |
| 21.09.2020 | D. Limnios | PAOK | 1. FC Köln | € 3M |
| 18.09.2020 | T. Arokodare | — | 1. FC Köln | Loan |
| 16.09.2020 | O. Duda | Hertha BSC | 1. FC Köln | € 7M |
| 16.09.2020 | L. Schaub | 1. FC Köln | FC Luzern | Loan |
| 15.09.2020 | S. Andersson | Union Berlin | 1. FC Köln | € 6.5M |
| 15.09.2020 | J. Córdoba | 1. FC Köln | Hertha BSC | € 15M |
| 20.08.2020 | S. Terodde | 1. FC Köln | Hamburger SV | Free |
| 13.08.2020 | R. Zieler | — | 1. FC Köln | Loan |
| 11.08.2020 | F. Sørensen | BSC Young Boys | 1. FC Köln | N/A |
| 11.08.2020 | V. Koziello | 1. FC Köln | Nacional | Loan |
| 07.08.2020 | T. Ostrák | 1. FC Köln | Karviná | Loan |
| 06.08.2020 | K. Schindler | 1. FC Köln | — | Loan |
| 03.08.2020 | Y. Bisseck | 1. FC Köln | Guimaraes | Loan |
| 31.07.2020 | T. Ostrák | TSV Hartberg | 1. FC Köln | N/A |
| 18.07.2020 | M. Risse | 1. FC Köln | — | Loan |
| 15.07.2020 | J. Bartels | 1. FC Köln | — | N/A |
| 01.07.2020 | B. Verstraete | 1. FC Köln | Antwerp | Loan |
| 01.07.2020 | N. Hauptmann | 1. FC Köln | Holstein Kiel | Loan |
| 01.07.2020 | J. Horn | — | 1. FC Köln | N/A |
| 01.07.2020 | M. Uth | 1. FC Köln | FC Schalke 04 | N/A |
| 01.07.2020 | S. Özcan | Holstein Kiel | 1. FC Köln | N/A |
| 31.01.2020 | M. Bader | 1. FC Köln | SV Darmstadt 98 | N/A |
| 31.01.2020 | V. Koziello | 1. FC Köln | Paris FC | Loan |
| 30.01.2020 | L. Sobiech | 1. FC Köln | — | Loan |
| 30.01.2020 | T. Leistner | — | 1. FC Köln | Loan |
| 11.01.2020 | L. Schaub | 1. FC Köln | Hamburger SV | Loan |
| 08.01.2020 | D. Churlinov | 1. FC Köln | VfB Stuttgart | N/A |
| 05.01.2020 | E. Rexhbeçaj | VfL Wolfsburg | 1. FC Köln | Loan |
| 03.01.2020 | M. Uth | FC Schalke 04 | 1. FC Köln | Loan |
| 29.08.2019 | N. Nartey | 1. FC Köln | VfB Stuttgart | N/A |
| 23.08.2019 | S. Özcan | 1. FC Köln | Holstein Kiel | Loan |
| 22.08.2019 | Y. Bisseck | 1. FC Köln | Roda | Loan |
| 18.08.2019 | F. Sørensen | 1. FC Köln | BSC Young Boys | Loan |
| 15.08.2019 | J. Horn | 1. FC Köln | — | Loan |
| 08.08.2019 | João Queirós | 1. FC Köln | — | Loan |
| 06.08.2019 | S. Bornauw | Anderlecht | 1. FC Köln | € 4M |
| 05.08.2019 | J. Geis | 1. FC Köln | — | Free |
| 29.07.2019 | E. Skhiri | Montpellier | 1. FC Köln | N/A |