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| 1st(1st leg) | Manchester United | - | Montpellier HSC | 1:1 (1:1) | ||
| 2nd (2nd leg) | Montpellier HSC | - | Manchester United | 0:2 (0:1) | ||
| 1st(1st leg): 06/03/1991 | 2nd (2nd leg): 19/03/1991 | Winner: Manchester United | ||||
| 1st(1st leg) | Legia Warszawa | - | Sampdoria | 1:0 (1:0) | ||
| 2nd (2nd leg) | Sampdoria | - | Legia Warszawa | 2:2 (0:1) | ||
| 1st(1st leg): 06/03/1991 | 2nd (2nd leg): 20/03/1991 | Winner: Legia Warszawa | ||||
| 1st(1st leg) | Dinamo Kiev | - | FC Barcelona | 2:3 (1:2) | ||
| 2nd (2nd leg) | FC Barcelona | - | Dinamo Kiev | 1:1 (0:0) | ||
| 1st(1st leg): 06/03/1991 | 2nd (2nd leg): 20/03/1991 | Winner: FC Barcelona | ||||
| 1st(1st leg) | RFC Liège | - | Juventus | 1:3 (0:2) | ||
| 2nd (2nd leg) | Juventus | - | RFC Liège | 3:0 (3:0) | ||
| 1st(1st leg): 06/03/1991 | 2nd (2nd leg): 20/03/1991 | Winner: Juventus | ||||
