| Name | Age | Position | Nationality |
|---|---|---|---|
| Álex Remiro | 31 | Goalkeeper | Spain |
| Unai Marrero | 24 | Goalkeeper | Spain |
| Álvaro Odriozola | 30 | Defence | Spain |
| Igor Zubeldía | 29 | Defence | Spain |
| Sergio Gómez | 26 | Defence | Spain |
| Aihen Muñoz | 29 | Defence | Spain |
| Jon Aramburu | 24 | Defence | Venezuela |
| Jon Pacheco | 25 | Defence | Spain |
| Mamadou Sarr | 21 | Defence | Senegal |
| Héctor Fort | 20 | Defence | Spain |
| Jon Martín | 20 | Defence | Spain |
| Carlos Soler | 29 | Midfield | Spain |
| Yangel Herrera | 28 | Midfield | Venezuela |
| Luka Sučić | 24 | Midfield | Croatia |
| Beñat Turrientes | 24 | Midfield | Spain |
| Arsen Zakharyan | 23 | Midfield | Russia |
| Pablo Marin | 23 | Midfield | Spain |
| Jon Gorrotxategi | 24 | Midfield | Spain |
| Gonçalo Guedes | 29 | Offence | Portugal |
| Takefusa Kubo | 25 | Offence | Japan |
| Ander Barrenetxea | 24 | Offence | Spain |
| Mikel Oyarzabal | 29 | Offence | Spain |
| Orri Steinn Óskarsson | 22 | Offence | Iceland |
| Ochieng | 23 | Offence | Kenya |