FC Köln 2017/2018
| P | # | Player | Born | Height | Weight | Contract | |
|---|---|---|---|---|---|---|---|
| GK | 35 | Sven Müller | 1996-02-13 | 190 | 82 | 2018-06-30 | |
| GK | 18 | Thomas Kessler | 1986-01-20 | 195 | 85 | 2019-06-30 | |
| GK | 1 | Timo Horn | 1993-05-12 | 192 | 92 | 2019-06-30 | |
| D | 5 | Dominic Maroh | 1987-03-04 | 186 | 83 | 2018-06-30 | |
| D | 3 | Dominique Heintz | 1993-08-15 | 189 | 85 | 2019-06-30 | |
| D | 25 | Filip Mladenovic | 1991-08-15 | 180 | 65 | 2019-06-30 | |
| D | 4 | Frederik Sørensen | 1992-04-14 | 193 | 80 | 2019-06-30 | |
| D | 14 | Jonas Hector | 1990-05-27 | 185 | 75 | 2021-06-30 | |
| D | 24 | Lukas Klünter | 1996-05-26 | 184 | 73 | 2017-06-30 | |
| D | 16 | Pawel Olkowski | 1990-02-13 | 184 | 75 | 2019-06-30 | |
| M | Christian Clemens | 1991-08-04 | 181 | 70 | 2019-06-30 | ||
| M | 34 | Konstantin Rausch | 1990-03-15 | 182 | 76 | 2019-06-30 | |
| M | 21 | Leonardo Bittencourt | 1993-12-19 | 171 | 60 | 2021-06-30 | |
| M | 7 | Marcel Risse | 1989-12-17 | 183 | 78 | 2019-06-30 | |
| M | 30 | Marcel Hartel | 1996-01-19 | 176 | 69 | 2019-06-30 | |
| M | 6 | Marco Höger | 1989-09-16 | 186 | 74 | 2017-06-30 | |
| M | 33 | Matthias LehmannC | 1983-05-28 | 179 | 68 | 2017-06-30 | |
| M | 8 | Milos Jojic | 1992-03-19 | 177 | 73 | 2019-06-30 | |
| M | Nebiyou Perry | 1999-10-02 | |||||
| M | Salih Özcan | 1998-01-11 | 182 | 2017-06-30 | |||
| F | 27 | Anthony Modeste | 1988-04-14 | 186 | 73 | 2021-06-30 | |
| F | 9 | Artjoms Rudnevs | 1988-01-13 | 183 | 70 | 2019-06-30 | |
| F | 19 | Sehrou Guirassy | 1996-03-12 | 186 | 75 | 2021-06-30 | |
| F | 11 | Simon Zoller | 1991-06-26 | 179 | 70 | 2018-06-30 | |
| F | 13 | Yuya Osako | 1990-05-18 | 182 | 70 | 2017-06-30 |
| Date | Player | From | To | Status | Src |
|---|---|---|---|---|---|
| 31.Jan | Nebiyou Perry (M) | AIK | FC Köln | Confirmed | |
| 30.Jun | Neven Subotic (D) | FC Köln | Borussia Dortmund | Confirmed | |
| 26.Jan | Neven Subotic (D) | Borussia Dortmund | FC Köln | Confirmed | |
| 14.Aug | Leonardo Bittencourt (M) | FC Köln | FC Köln | Extension | |
| 14.Aug | Jonas Hector (D) | FC Köln | FC Köln | Extension | |
| 20.Jul | Sehrou Guirassy (F) | LOSC Lille Métropole | FC Köln | Confirmed | |
| 4.Jul | Anthony Modeste (F) | FC Köln | FC Köln | Extension | |
| 15.Jun | Artjoms Rudnevs (F) | Hamburger SV | FC Köln | Confirmed | |
| 31.May | Kevin Vogt (M) | FC Köln | TSG 1899 Hoffenheim | Confirmed | |
| 27.May | Yannick Gerhardt (M) | FC Köln | VfL Wolfsburg | Confirmed |