| Yellow | VS Club | Date | Sections | |
|---|---|---|---|---|
| 4 | Celta Vigo | 16-09-2003 | Group Stage | Match details |
| 3 | Celta Vigo | 26-11-2003 | Group Stage | Match details |
| 1 | AFC Ajax | 09-12-2003 | Group Stage | Match details |
| 1 | AC Milan | 04-11-2003 | Group Stage | Match details |
| 1 | AC Milan | 22-10-2003 | Group Stage | Match details |
