Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2011 |  | Ruiz de Galarreta | MF | |||
| 07/2010 | | Álvaro Hernando | DF | |||
| 07/2010 | | Bustinza | DF | |||
| 07/2010 | | Enric Saborit | DF | |||
| 07/2010 | | Álvaro Peña | MF | |||
| 07/2010 | | Domínguez | MF |  | Athletic Club U19 | Bilbao U19 |
| 07/2010 | | Iñigo Eguaras | MF | | Athletic Club U19 | Bilbao U19 |
| 07/2010 | | Jonxa | MF | |||
| 07/2010 | | Vilarchao | MF | |||
| 07/2010 | | Etxaniz | FW |  | Athletic Club B | Bilbao B |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2011 | | Etxaniz | FW | | Athletic Club B | Bilbao B |
| 08/2010 | | Jon Altamira | GK |  | SD Gernika | Gernika |
| 07/2010 | | Ander Larrucea | DF |  | Barakaldo CF | Barakaldo CF |
| 07/2010 | | Lombera | DF |  | Club Portugalete | Portugalete |
| 07/2010 | | Odei | DF |  | SCD Durango | Durango |
| 07/2010 | | Royo | DF | | Athletic Club B | Bilbao B |
| 07/2010 | | Ander Vitoria | FW |  | SD Lemona | SD Lemona |