| No. | Player | Nationality | Born | Position | Height |
|---|---|---|---|---|---|
| 1 | Enrique Royo |  Spain | 1991 | Goalkeeper | 1.83 m |
| 30 | Alex Daza | Spain | 2002 | Goalkeeper | |
| Dani Giménez | Spain | 1983 | Goalkeeper | 1.82 m | |
| Rubén Miño | Spain | 1989 | Goalkeeper | 1.91 m | |
| Jon Serantes | Spain | 1989 | Goalkeeper | 1.84 m | |
| Yaroslav Meykher | Ukraine | 2000 | Goalkeeper | 1.84 m | |
| Christian Cores | Spain | 2003 | Goalkeeper | 1.87 m | |
| Víctor Pradas | Spain | 1999 | Goalkeeper | 1.88 m | |
| 2 | Joan Campins | Spain | 1995 | Defender | 1.84 m |
| 2 | Yasin Iribarren | Spain | 1994 | Defender | |
| 3 | Mikel Kortazar Idiakez | Spain | 1999 | Defender | |
| 3 | Álvaro Mateo | Spain | 1997 | Defender | 1.75 m |
| 4 | Titi Fernández | Spain | 1992 | Defender | 1.79 m |
| 4 | Julen Monreal | Spain | 1994 | Defender | 1.93 m |
| 6 | Aitor Arregui | Spain | 1990 | Defender | 1.82 m |
| 12 | Eloy Moreno | Spain | 2004 | Defender | |
| 16 | Iñaki Sáenz | Spain | 1988 | Defender | 1.77 m |
| 17 | Beñat Almandoz | Spain | 2002 | Defender | |
| 19 | David Fernández | Spain | 1985 | Defender | 1.86 m |
| 27 | Miki Codina | Spain | 2002 | Defender | 1.85 m |
| 33 | Sergio López Revilla | Spain | 2003 | Defender | |
| 34 | Marc Fernández | Spain | Defender | ||
| Ismael Santana | Spain | 2004 | Defender | 1.75 m | |
| José Viguera | Spain | 1998 | Defender | 1.84 m | |
| Víctor Martínez | Spain | 1998 | Defender | 1.84 m | |
| Sergio García | Spain | 2001 | Defender | 1.78 m | |
| Sergio Tekio | Spain | 1990 | Defender | 1.75 m | |
| 5 | Imanol Sarriegi | Spain | 1995 | Midfielder | |
| 8 | Pau López | Spain | 1995 | Midfielder | |
| 10 | Juan Menudo Domínguez | Spain | 1991 | Midfielder | 1.67 m |
| 14 | Álex Gualda | Spain | 1998 | Midfielder | 1.80 m |
| 18 | Antonio Caballero | Spain | 1994 | Midfielder | 1.79 m |
| 19 | Ricardo de Moraes | Brazil | 2004 | Midfielder | |
| 21 | Juan Agüero | Argentina | 1999 | Midfielder | 1.75 m |
| 23 | Xavi Boniquet | Spain | 1990 | Midfielder | 1.73 m |
| 25 | Boubacar Keita | Senegal | 2000 | Midfielder | |
| 26 | Curro Bonilla | Spain | 2003 | Midfielder | 1.72 m |
| 30 | Iván Garrido | Spain | 2004 | Midfielder | |
| Carlos Benítez | Spain | 2002 | Midfielder | 1.75 m | |
| Adrián Ruiz | Spain | 2000 | Midfielder | 1.87 m | |
| Jon Errasti | Spain | 1988 | Midfielder | 1.80 m | |
| Iker Guarrotxena | Spain | 1992 | Midfielder | 1.75 m | |
| 7 | Carlos Doncel | Spain | 1996 | Forward | 1.69 m |
| 10 | Álvaro Barrero | Spain | 1998 | Forward | |
| 11 | Jon Madrazo | Spain | 1993 | Forward | |
| 11 | Zourdine Thior | Senegal | 1997 | Forward | 1.70 m |
| 20 | Jorge Martinez | Spain | 1999 | Forward | 1.96 m |
| 21 | Dani Pichín | Spain | 1992 | Forward | 1.78 m |
| 24 | Enzo Facchin | Uruguay | 2002 | Forward | 1.78 m |
| 29 | Iván Estrecha | Spain | 2003 | Forward | |
| 34 | Noé Ela | Equatorial Guinea | 2003 | Forward | 1.85 m |
| Albert Rosas | Andorra | 2002 | Forward | 1.79 m | |
| Ousama Siddiki | Morocco | 1998 | Forward | 1.81 m | |
| Ander Vitoria | Spain | 1990 | Forward | 1.79 m | |
| Martín Lapeña | Spain | 2000 | Forward | 1.70 m | |
| Ricardo Schutte | Portugal | 1998 | Forward | 1.85 m | |
| José Zelu | Spain | 1996 | Forward | 1.70 m | |
| David Roni | Spain | 1993 | Forward | 1.82 m | |
| Rufo Herraiz | Spain | 1993 | Forward | 1.75 m |
