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| 1st(1st leg) | AS Monaco | - | Sampdoria | 2:2 (1:0) | ||
| 2nd (2nd leg) | Sampdoria | - | AS Monaco | 2:0 (1:0) | ||
| 1st(1st leg): 03/04/1990 | 2nd (2nd leg): 18/04/1990 | Winner: Sampdoria | ||||
| 1st(1st leg) | RSC Anderlecht | - | Dinamo Bucureşti | 1:0 (0:0) | ||
| 2nd (2nd leg) | Dinamo Bucureşti | - | RSC Anderlecht | 0:1 (0:0) | ||
| 1st(1st leg): 04/04/1990 | 2nd (2nd leg): 18/04/1990 | Winner: RSC Anderlecht | ||||
