| Position | Name | Age | Birthday | Nationality |
|---|---|---|---|---|
| Goalkeeper | Aimar Peñalver San Roque | 20 | 2004-02-20 | Spain |
| Defender | Aimar Duñabeitia Madariaga | 21 | 2003-02-26 | Spain |
| Attacker | Aimar Peña Vázquez | 20 | 2004-01-06 | Spain |
| Defender | Aitor Sollano Sierra | 21 | 2003-01-15 | Spain |
| Defender | Alex Alba Fernández-Berridi | 20 | 2004-01-22 | Spain |
| Midfielder | Alvaro Marin Sesma | 20 | 2003-05-01 | Spain |
| Defender | Asier Santamaría Arranz | 20 | 2004-04-06 | Spain |
| Midfielder | Asier Santolaya Antolín | 20 | 2004-02-09 | Spain |
| Attacker | Carlos Mattheus Caballero | 22 | 2001-10-25 | Spain |
| Defender | Eneko Ebro Cortina | 20 | 2003-09-29 | Spain |
| Attacker | Erlantz Palacín Alfonso | 21 | 2003-02-10 | Spain |
| Attacker | Ibai Asenjo Godoy | 20 | 2003-11-13 | Spain |
| Midfielder | Ibon Badiola Arrizabalaga | 19 | 2004-10-01 | Spain |
| Midfielder | Ibon Ignacio Sánchez Océn | 20 | 2004-03-08 | Spain |
| Attacker | Ieltxu García Terreros | 20 | 2004-03-16 | Spain |
| Midfielder | Iker Varela Parra | 21 | 2003-03-01 | Spain |
| Goalkeeper | Kevin Ríos Zapata | 20 | 2003-11-11 | Colombia |
| Defender | Lander Arenal Antuñano | 19 | 2004-07-18 | Spain |
| Defender | Manex Irizar Landaribar | 19 | 2004-06-11 | Spain |
| Defender | Miguel Barandalla Ostiz | 20 | 2004-03-24 | Spain |
| Midfielder | Mikel Jauregizar Alboniga | 20 | 2003-11-13 | Spain |
| Goalkeeper | Oier Gastesi Serrano | 20 | 2003-10-30 | Spain |
| Midfielder | Wibuala Junior Bita Bueto | 18 | 2005-06-08 | Ivory Coast |