| 2. Round | 22/07/2021 | Gżira United | - | HNK Rijeka | 0:2 | ||||
| 2. Round | 29/07/2021 | HNK Rijeka | - | Gżira United | 1:0 | ||||
| 3. Round | 05/08/2021 | Hibernian FC | - | HNK Rijeka | 1:1 |  |
|||
| 3. Round | 12/08/2021 | HNK Rijeka | - | Hibernian FC | 4:1 | ||||
| Play-offs | 19/08/2021 | PAOK Saloniki | - | HNK Rijeka | 1:1 | ||||
| Play-offs | 26/08/2021 | HNK Rijeka | - | PAOK Saloniki | 0:2 |
Montenegro