| Champions League | Matches | W | D | L |  |
 |
 |
| home | 1 | - | - | 1 | - | - | - |
| away | 1 | - | - | 1 | - | - | 2 |
| overall | 2 | - | - | 2 | - | - | 2 |
| Champions League | Home | - | Guest | |
|
|
Results |
| 20/09/56 | FC Porto | - | Athletic Club | - | - | - | 1:2 |
| 26/09/56 | Athletic Club | - | FC Porto | - | - | 2 | 3:2 |
Italy