| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 4 | FC Schalke 04 | 29-09-2011 | Group Stage | Match details |
| 3 | AEK Larnaca | 15-09-2011 | Group Stage | Match details |
| 2 | FC Schalke 04 | 14-12-2011 | Group Stage | Match details |
| 2 | AEK Larnaca | 01-12-2011 | Group Stage | Match details |
| 2 | Steaua Bucharest | 03-11-2011 | Group Stage | Match details |
| 1 | Steaua Bucharest | 20-10-2011 | Group Stage | Match details |
