| No. | Name | Birth Date | Age | Country | Position | Height | Weight | Preferred foot |
| 3 | Jon de Luis | 2003-08-05 | 22 | 186 | 0 | Left | ||
| Ander Izagirre | 2003-06-28 | 22 | 0 | 0 | Right | |||
| Endika Bujan de Rueda | 2003-01-16 | 22 | 0 | 0 | ||||
| Eneko Ebro | 2003-09-29 | 22 | 0 | 0 | Left | |||
| Junior Bita | 2005-06-08 | 20 | 182 | 0 | Right | |||
| Asier Hierro | 2005-05-06 | 20 | 190 | 0 | Right | |||
| 25 | Mikel Santos | 2004-11-01 | 21 | 182 | 72 | Left | ||
| 12 | Miguel Barandalla | 2004-03-24 | 21 | 180 | 75 | Left | ||
| 19 | Adama Boiro | 2002-06-22 | 23 | 183 | 75 | Left | ||
| 33 | Aingeru Olabarrieta | 2005-11-14 | 20 | 182 | 76 | Left | ||
| 2 | Urko Iruretagoiena Lertxundi | 1999-09-29 | 26 | 175 | 70 | Right | ||
| 9 | Quicala Bari | - | 0 | 0 | ||||
| 36 | Mikel Jauregizar | 2003-11-13 | 22 | 177 | 73 | Right | ||
| Asier Perez Moreno | - | 0 | 0 | |||||
| 4 | Aimar Dunabeitia | 2003-02-26 | 22 | 184 | 79 | Right | ||
| 13 | Oier Gastesi | 2003-10-30 | 22 | 190 | 84 | Right | ||
| 18 | Luis Bilbao | 2003-03-24 | 22 | 181 | 0 | Left | ||
| 10 | Ibon Sanchez | 2004-03-08 | 21 | 0 | 0 | Left | ||
| Unai Velez Galvan | 2002-02-20 | 23 | 0 | 0 | ||||
| Alejandro Rego Mora | 2003-06-11 | 22 | 192 | 79 | Right | |||
| 22 | Hugo Rincon | 2003-01-27 | 22 | 183 | 78 | Right | ||
| Unai Gomez | 2003-05-25 | 22 | 183 | 78 | Left | |||
| 13 | Julen Agirrezabala | 2000-12-26 | 24 | 187 | 80 | Left | ||
| 28 | Julen Arellano Sandua | 1997-01-08 | 28 | Defender | 178 | 0 | Left |