*Aston Villa 3-3 Lille OSC
| 18.04.2024 | Lille OSC | 2-1/p.3-4 | Aston Villa | |
| 11.04.2024 | Aston Villa | 2-1 | Lille OSC | |
*Club Brugge 3-0 PAOK Salonica
| 18.04.2024 | PAOK Salonica | 0-2 | Club Brugge | |
| 11.04.2024 | Club Brugge | 1-0 | PAOK Salonica | |
*Olympiakos Pireus 3-3 Fenerbahçe SK
| 18.04.2024 | Fenerbahçe SK | 1-0/p.2-3 | Olympiakos Pireus | |
| 11.04.2024 | Olympiakos Pireus | 3-2 | Fenerbahçe SK | |
Viktoria Plzen 0-2 Fiorentina *
| 18.04.2024 | Fiorentina | 2-0 AET | Viktoria Plzen | |
| 11.04.2024 | Viktoria Plzen | 0-0 | Fiorentina | |