- Name Athletic Club II
- Founded 1964 (60 years ago)
- Ground Name: Instalaciones de Lezama
Capacity: 2000 - Head coach Joseba Etxeberria
SQUAD
| # | Player | Date of birth | Position | Height | Weight |
|---|---|---|---|---|---|
 Julen Agirrezabala Astúlez | 26/12/2000 | Goalkeeper | |||
 Ander Iruarrizaga Díez | 22/08/1998 | Goalkeeper | 188 cm | 74 kg | |
| Xabier Arberas Zabala | 06/04/2000 | Defender | 183 cm | 68 kg | |
 Jesús Areso Blanco | 02/07/1999 | Defender | 182 cm | 81 kg | |
| Julen Bernaola Cuezva | 29/04/1999 | Defender | 186 cm | 77 kg | |
| Imanol García de Albéniz Crecente | 08/06/2000 | Defender | 177 cm | 63 kg | |
| Antxón Jaso Zunzarren | 23/09/1997 | Defender | 187 cm | ||
| Mikel Kortazar Idiakez | 10/03/1999 | Defender | |||
| Ander Lorente Velada | 28/01/2001 | Defender | |||
| Oier Luengo Redondo | 11/11/1997 | Defender | |||
| Álvaro Núñez Cobo | 07/07/2000 | Defender | 174 cm | 60 kg | |
| Aitor Paredes | 29/04/2000 | Defender | 186 cm | ||
| Gorka Agirre Moreno | 13/04/2000 | Midfielder | 177 cm | 69 kg | |
| Iñigo Baqué Atxotegi | 01/01/1997 | Midfielder | 186 cm | 75 kg | |
| Jon Cabo Madariaga | 20/06/2000 | Midfielder | 180 cm | 67 kg | |
| Youssouf Diarra | 13/09/1998 | Midfielder | 174 cm | 71 kg | |
| Jon Guruzeta Rodríguez | 03/04/2000 | Midfielder | |||
| Beñat Prados Díaz | 08/02/2001 | Midfielder | |||
| Víctor San Bartolomé Prieto | 26/10/1999 | Midfielder | 186 cm | ||
| Oier Zarraga | 04/01/1999 | Midfielder | 175 cm | 76 kg | |
 Juan Artola Canales | 07/04/2000 | Attacker | 176 cm | ||
| Nicolás Serrano Galdeano | 05/03/2003 | Attacker | |||
| Andoni Tascón Hermida | 27/02/1998 | Attacker | 174 cm | 69 kg | |
 Ewan Roy Urain Aird | 10/03/2000 | Attacker | 192 cm | 79 kg | |
| Nicholas Williams Arthuer | 12/07/2002 | Attacker |
