| Position | Name | Age | Birthday | Nationality |
|---|---|---|---|---|
| Attacker | Aitor Villar Ruiz | 33 | 1991-01-16 | Spain |
| Midfielder | Alexander Albístegui Revilla | 37 | 1987-07-01 | Spain |
| Defender | Ander Gago Álvarez | 40 | 1984-09-10 | Spain |
| Defender | Ander Blanco Gimón | 24 | 2000-03-06 | Spain |
| Attacker | Aritz Pascual Díez | 25 | 1999-06-30 | Spain |
| Defender | Aritz Huete Beloki | 28 | 1996-06-27 | Spain |
| Attacker | Borja Álvarez Martínez | 33 | 1991-01-28 | Spain |
| Defender | Daiki Niwa | 38 | 1986-01-16 | Japan |
| Midfielder | Garikoitz Basaras Denche | - | - | Spain |
| Attacker | Ibai Acosta Dos Santos | - | - | Spain |
| Goalkeeper | Ibón Barandiarán García | 31 | 1993-10-01 | Spain |
| Defender | Jagoba Portillo Muguruza | 32 | 1992-11-19 | Spain |
| Midfielder | Jaime Zumalakárregui Menchaca | 38 | 1986-01-13 | Spain |
| Attacker | Jon Elorza Roy | 27 | 1997-07-02 | Spain |
| Attacker | Josu Juste Vidaurrazaga | 24 | 2000-04-14 | Spain |
| Attacker | José María Pan Fernández | 30 | 1994-06-07 | Spain |
| Midfielder | Julen Huidobro Betolaza | 29 | 1995-04-01 | Spain |
| Defender | Markel Bravo Román | 25 | 1999-03-30 | Spain |
| Midfielder | Omar Kaci Herrero | 29 | 1995-10-10 | Spain |
| Goalkeeper | Pablo Fid Martín | 27 | 1997-02-10 | Spain |
| Midfielder | Unai Buján Díez | 23 | 2001-02-08 | Spain |
| Midfielder | Víctor Isuskiza Taranilla | 25 | 1998-12-17 | Spain |
| Midfielder | Víctor Manuel Monteiro Oliveira | 30 | 1994-06-16 | Portugal |
| Defender | Xabier Galán Garamendi | 34 | 1989-11-23 | Spain |
| Attacker | Xabier Auzmendi Arruabarrena | 27 | 1997-05-01 | Spain |
| Defender | Álvaro Mateo Montiel | 27 | 1997-02-16 | Spain |