Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2022 |  | Álvaro Marín | FW |  | Athletic Club U19 | Bilbao U19 |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 07/2021 | | Alejandro Ibarrondo | FW |  | CD Laredo | CD Laredo |
| 07/2021 | | Unai Pérez | GK |  | Athletic Club B | Bilbao B |
| 07/2021 | | Ander Lorente | DF | | Athletic Club B | Bilbao B |
| 07/2021 | | Asier Grande | DF |  | Arenas de Getxo | Arenas de Getxo |