| Position | Name | Age | Birthday | Nationality |
|---|---|---|---|---|
| Defender | Aihen Muñoz Capellán | 26 | 1997-08-16 | Spain |
| Goalkeeper | Alejandro Remiro Gargallo | 29 | 1995-03-24 | Spain |
| Attacker | Ander Barrenetxea Muguruza | 22 | 2001-12-27 | Spain |
| Goalkeeper | Andoni Zubiaurre Dorronsoro | 27 | 1996-12-04 | Spain |
| Defender | Andoni Gorosabel Espinosa | 27 | 1996-08-04 | Spain |
| Defender | Aritz Elustondo Irribaria | 30 | 1994-03-28 | Spain |
| Midfielder | Beñat Turrientes Imaz | 22 | 2002-01-31 | Spain |
| Midfielder | Brais Méndez Portela | 27 | 1997-01-07 | Spain |
| Attacker | Carlos Fernández Luna | 27 | 1996-05-22 | Spain |
| Midfielder | David Josué Jiménez Silva | 38 | 1986-01-08 | Spain |
| Defender | Diego Rico Salguero | 31 | 1993-02-23 | Spain |
| Defender | Hamari Traoré | 32 | 1992-01-27 | Mali |
| Midfielder | Igor Zubeldía Elorza | 27 | 1997-03-30 | Spain |
| Midfielder | Jon Karrikaburu Jaimerena | 21 | 2002-09-19 | Spain |
| Defender | Jon Pacheco Dozagarat | 23 | 2001-01-08 | Spain |
| Midfielder | Martín Zubimendi Ibáñez | 25 | 1999-02-02 | Spain |
| Attacker | Martín Merquelanz Castellanos | 28 | 1995-06-12 | Spain |
| Midfielder | Mikel Merino Zazón | 27 | 1996-06-22 | Spain |
| Attacker | Mikel Oyarzabal Ugarte | 27 | 1997-04-21 | Spain |
| Attacker | Mohamed-Ali Cho | 20 | 2004-01-19 | France |
| Midfielder | Robert Navarro Muñoz | 22 | 2002-04-12 | Spain |
| Defender | Robin Le Normand | 27 | 1996-11-11 | France |
| Midfielder | Takefusa Kubo | 22 | 2001-06-04 | Japan |
| Attacker | Umar Sadiq Mesbah | 27 | 1997-02-02 | Nigeria |
| Goalkeeper | Unai Marrero Larrañaga | 22 | 2001-10-09 | Spain |
| Defender | Álex Sola López Ocaña | 24 | 1999-06-09 | Spain |