Additions
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 01/2017 |  | Josué Dorrio | MF | |||
| 01/2017 | | Julen López | DF |  | SD Eibar B | SD Eibar B |
| 01/2017 | | Imanol Sarriegi | MF | |||
| 12/2016 | | Quique | GK | |||
| 08/2016 | | Arbilla | DF |  | RCD Espanyol | RCD Espanyol |
| 08/2016 | | Nano Mesa | FW |  | CD Tenerife | Tenerife |
| 08/2016 | | Fran Rico | MF |  | Granada CF | Granada CF |
| 08/2016 | | Gálvez | DF |  | Werder Bremen | Werder |
| 07/2016 |  | Bebé | FW |  | SL Benfica | Benfica |
| 07/2016 | | Yoel | GK |  | Valencia CF | Valencia |
| 07/2016 | | Pedro León | MF |  | Getafe CF | Getafe |
| 07/2016 | | Areitio | GK |  | SCD Durango | Durango |
| 07/2016 | | Elgezabal | DF |  | Barakaldo CF | Barakaldo CF |
| 07/2016 | | Jordi Calavera | DF |  | Gimnàstic de Tarragona | Nàstic |
| 07/2016 |  | Florian Lejeune | DF |  | Girona FC | Girona |
| 07/2016 | | Rubén Peña | DF |  | CD Leganés | Leganés |
| 07/2016 | | Christian Rivera | MF |  | Real Oviedo | Oviedo |
| 07/2016 | | Arruabarrena | FW |  | SD Huesca | Huesca |
| 07/2016 | | Pere Milla | FW |  | UD Logroñés | UD Logroñés |
Departures
| from | Name | Pos | Team | Team | ||
|---|---|---|---|---|---|---|
| 08/2016 | | Elgezabal | DF |  | AD Alcorcón | Alcorcón |
| 08/2016 | | Jordi Calavera | DF |  | CD Lugo | Lugo |
| 08/2016 | | Pere Milla | FW |  | UCAM Murcia CF | UCAM Murcia |
| 07/2016 | | Irureta | GK |  | Real Zaragoza | Zaragoza |
| 07/2016 | | Lillo | DF |  | Sporting Gijón | Sporting Gijón |
| 07/2016 | | Ander Gayoso | DF |  | CD Tudelano | CD Tudelano |
| 07/2016 | | Ekiza | DF |  | Zirka Kropyvnytskyi | Zirka Kropyvnytskyi |
| 07/2016 | | Ion Ansotegi | DF |  | RCD Mallorca | Mallorca |
| 07/2016 |  | Aleksandar Pantić | DF |  | Villarreal CF | Villarreal |
| 07/2016 |  | Izet Hajrović | MF | | Werder Bremen | Werder |
| 07/2016 | | Iñigo Barrenetxea | MF |  | Sestao River | Sestao River |
| 07/2016 | | Jon Etxaburu | MF | | Sestao River | Sestao River |
| 07/2016 | | Keko | MF |  | Málaga CF | Málaga |
| 07/2016 |  | Josip Radošević | MF |  | SSC Napoli | Napoli |
| 07/2016 | | Borja Bastón | FW |  | Atlético Madrid | Atlético |
| 07/2016 | | Saúl Berjón | FW |  | Pumas UNAM | Pumas UNAM |
| 07/2016 | | Thaylor Lubanzadio | FW | | UD Logroñés | UD Logroñés |