| 2. Round | 07/12/2023 | CD Cayón | - | Athletic Club | 0:3 | ||||
| Round of 16 | 16/01/2024 | Athletic Club | - | CD Alavés | 2:0 | ||||
| Quarter-finals | 24/01/2024 | Athletic Club | - | FC Barcelona | 4:2 aet |
| 2. Round | 07/12/2023 | CD Cayón | - | Athletic Club | 0:3 | ||||
| Round of 16 | 16/01/2024 | Athletic Club | - | CD Alavés | 2:0 | ||||
| Quarter-finals | 24/01/2024 | Athletic Club | - | FC Barcelona | 4:2 aet |
| Mikel Jauregizar Alboniga | |
| Born: | 13.11.2003 |
| Place of birth: |
Bermeo, 
Spain |
| Nationality: |
Spain
|
| Height: | 177 cm |
| Position(s): | Central Midfielder Offensive Midfielder |
| Foot: | right |