| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 6 | Arsenal | 19-10-2017 | Group Stage | Match details |
| 3 | 1. FC Koln | 28-09-2017 | Group Stage | Match details |
| 2 | CSKA Moscow | 21-02-2018 | Round of 32 | Match details |
| 2 | 1. FC Koln | 07-12-2017 | Group Stage | Match details |
| 2 | FC BATE Borisov | 23-11-2017 | Group Stage | Match details |
