Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 02/2017 |  | Magunagoitia | GK | |||
| 02/2017 | | Jorge | GK | |||
| 02/2017 | | Mikel Álvaro | MF |  | Dinamo Tbilisi | Dinamo Tbilisi |
| 08/2016 | | Angoitia | GK |  | FC Tucson | FC Tucson |
| 07/2016 | | Unai Ferreras | DF | |||
| 07/2016 | | Koldo Obieta | FW |  | SD Zamudio | SD Zamudio |
| 07/2016 | | Jon Villanueva | GK |  | Marbella FC | Marbella |
| 07/2016 | | Eriz | DF |  | SD Gernika | Gernika |
| 07/2016 | | Flavian Ilici | DF | |||
| 07/2016 | | Iñaki Olaortua | DF |  | Real Zaragoza | Zaragoza |
| 07/2016 | | Oier Luengo | DF | |||
| 07/2016 | | Adrien Goñi | MF |  | La Roda CF | La Roda |
| 07/2016 | | Aitor Castro | MF |  | SD Leioa | Leioa |
| 07/2016 | | Baqué | MF | |||
| 07/2016 |  | Alec Fiddes | MF | |||
| 07/2016 | | Javi Moreno | MF |  | SD Compostela | SD Compostela |
| 07/2016 | | Dani Hernández | FW | | SD Compostela | SD Compostela |
| 07/2016 |  | Dieng | FW | |||
| 07/2016 | | Iván Arana | FW |  | Real Sociedad U19 | Real Sociedad U19 |
| 07/2016 | | Javi Rodríguez | FW |  | Club Portugalete | Portugalete |
| 07/2016 | | Aitor Larrazábal | MA | | Marbella FC | Marbella |
| 07/2016 | | Aranzubía | GK-CO |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2016 | | Unai Ferreras | DF |  | SD Deusto | SD Deusto |
| 08/2016 | | Iván Arana | FW | | SD Deusto | SD Deusto |
| 07/2016 | | Undabarrena | MF | | SD Leioa | Leioa |
| 07/2016 | | Sergio Herrera | GK |  | SD Huesca | Huesca |
| 07/2016 | | Amelibia | DF |  | UD Logroñés | UD Logroñés |
| 07/2016 |  | Aboubacar Diarra | DF | | SD Gernika | Gernika |
| 07/2016 | | Juaristi | DF |  | Barakaldo CF | Barakaldo CF |
| 07/2016 | | Garmendia | MF |  | UD Socuéllamos | UD Socuéllamos |
| 07/2016 | | Iván Sales | MF | | La Roda CF | La Roda |
| 07/2016 | | Jorge García | MF | | SD Leioa | Leioa |
| 07/2016 | | Arriaga | FW |  | Real Unión | Real Unión |
| 07/2016 | | Ubis | FW |  | Arenas de Getxo | Arenas de Getxo |