Squad
| No. | Player | Born | P |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Alejandro Remiro |  1995 | G | 5 | - | 453 | - | - | - |
| 13 | Unai Marrero | 2001 | G | - | - | - | - | - | - |
| Aitor Fraga | 2003 | G | - | - | - | - | - | - | |
| 2 | Álvaro Odriozola | 1995 | D | - | - | - | - | - | - |
| 3 | Aihen Muñoz | 1997 | D | 2 | 1 | 171 | - | 1 | - |
| 6 | Aritz Elustondo | 1994 | D | 1 | 2 | 95 | - | - | - |
| 17 | Sergio Gómez | 2000 | D | 3 | 2 | 282 | - | - | - |
| 19 | Jon Aramburu | 2002 | D | 4 | 1 | 381 | - | 1 | - |
| 31 | Jon Martín | 2006 | D | 1 | - | 91 | - | 1 | - |
| Duje Ćaleta-Car | 1996 | D | 4 | - | 339 | - | 2 | - | |
| 5 | Igor Zubeldía | 1997 | M | 5 | - | 453 | - | 2 | - |
| 8 | Arsen Zakharyan | 2003 | M | - | 2 | 48 | - | - | - |
| 22 | Beñat Turrientes | 2002 | M | 2 | 1 | 149 | - | 1 | - |
| 22 | Mikel Goti | 2002 | M | 1 | - | 57 | - | - | - |
| 24 | Luka Sučić | 2002 | M | 1 | 2 | 93 | - | - | - |
| 28 | Pablo Marín | 2003 | M | 5 | - | 370 | - | 1 | - |
| Alberto Dadie | 2002 | M | - | - | - | - | - | - | |
| Jon Gorrotxategi | 2002 | M | 3 | 1 | 249 | - | 2 | - | |
| Carlos Soler | 1997 | M | - | 2 | 65 | - | 1 | - | |
| Yangel Herrera | 1998 | M | - | - | - | - | - | - | |
| 7 | Ander Barrenetxea | 2001 | F | 5 | - | 410 | 1 | 1 | - |
| 9 | Orri Óskarsson | 2004 | F | 1 | 2 | 114 | 1 | - | - |
| 10 | Mikel Oyarzabal | 1997 | F | 5 | - | 421 | 1 | - | - |
| 14 | Takefusa Kubo | 2001 | F | 4 | 1 | 326 | 1 | - | - |
| 23 | Brais Méndez | 1997 | F | 2 | 2 | 212 | 1 | 1 | - |
| Gonçalo Guedes | 1996 | F | 1 | 4 | 146 | - | - | - | |
| Umar Sadiq | 1997 | F | - | - | - | - | - | - | |
| Jon Karrikaburu | 2002 | F | - | 2 | 47 | - | - | - |