Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2018 |  | Amorrortu | FW |  | CD Vitoria | CD Vitoria |
| 07/2017 |  | Christophe Atangana | GK |  | Athletic Club U19 | Bilbao U19 |
| 07/2017 | | Alonso | DF |  | SCD Durango | Durango |
| 07/2017 | | Ibai Rodríguez | DF | |||
| 07/2017 | | Egiluz | MF | | Athletic Club U19 | Bilbao U19 |
| 07/2017 | | Rudi | MF | | Athletic Club U19 | Bilbao U19 |
| 07/2017 |  | Yussi Diarra | MF | |||
| 07/2017 | | Zarraga | MF | | Athletic Club U19 | Bilbao U19 |
| 07/2017 | | Andoni Tascón | FW | |||
| 07/2017 | | Asier Parra | FW |  | Sodupe UC | Sodupe UC |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2017 | | Alonso | DF | | SCD Durango | Durango |
| 08/2017 | | Asier Parra | FW |  | Club Portugalete | Portugalete |
| 07/2017 | | Alex Valiño | FW | | Sodupe UC | Sodupe UC |
| 07/2017 | | Arzuaga | FW |  | CD Alavés B | CD Alavés B |
| 07/2017 | | Joseba Etxeberria | MA |  | SD Amorebieta | SD Amorebieta |