Squad
| No. | Player | Born | P |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Álex Remiro |  1995 | G | 36 | - | 3365 | - | 1 | - |
| 13 | Unai Marrero | 2001 | G | - | - | - | - | - | - |
| 2 | Jon Aramburu | 2002 | D | 30 | 3 | 2772 | 1 | 11 | - |
| 3 | Aihen Muñoz | 1997 | D | 8 | 11 | 830 | - | 1 | - |
| 6 | Aritz Elustondo | 1994 | D | 7 | 7 | 643 | - | - | - |
| 16 | Duje Ćaleta-Car | 1996 | D | 24 | 3 | 2244 | 1 | 6 | 1 |
| 17 | Sergio Gómez | 2000 | D | 29 | 4 | 2665 | - | 4 | 1 |
| 20 | Álvaro Odriozola | 1995 | D | 2 | 3 | 218 | 1 | - | - |
| 31 | Jon Martín | 2006 | D | 24 | - | 2252 | 2 | 5 | - |
| 4 | Jon Gorrotxategi | 2002 | M | 26 | 4 | 2297 | 1 | 6 | - |
| 5 | Igor Zubeldía | 1997 | M | 21 | 2 | 1960 | - | 8 | - |
| 8 | Beñat Turrientes | 2002 | M | 14 | 11 | 1208 | - | 6 | - |
| 12 | Yangel Herrera | 1998 | M | 5 | 6 | 455 | - | 1 | - |
| 18 | Carlos Soler | 1997 | M | 24 | 7 | 2200 | 4 | 3 | 1 |
| 21 | Arsen Zakharyan | 2003 | M | 2 | 14 | 424 | - | 1 | - |
| 24 | Luka Sučić | 2002 | M | 9 | 11 | 945 | 3 | 1 | - |
| 28 | Pablo Marín | 2003 | M | 14 | 18 | 1458 | - | 2 | - |
| 7 | Ander Barrenetxea | 2001 | F | 22 | 8 | 1825 | 3 | 5 | - |
| 9 | Orri Óskarsson | 2004 | F | 6 | 12 | 715 | 7 | 5 | - |
| 10 | Mikel Oyarzabal | 1997 | F | 30 | 2 | 2756 | 15 | 3 | - |
| 11 | Gonçalo Guedes | 1996 | F | 22 | 9 | 1864 | 8 | 3 | - |
| 14 | Takefusa Kubo | 2001 | F | 17 | 7 | 1554 | 2 | 2 | - |
| 19 | Jon Karrikaburu | 2002 | F | - | 7 | 148 | - | - | - |
| 22 | Wesley Gassova Ribeiro | 2005 | F | 1 | 4 | 100 | - | - | - |
| 23 | Brais Méndez | 1997 | F | 20 | 8 | 1636 | 6 | 4 | 1 |
| 26 | Dani Diaz | 2006 | F | - | 1 | 20 | - | - | - |
| 42 | Gorka Carrera | 2005 | F | - | 3 | 75 | - | 1 | - |