| # | Nombre | Posición | Nacionalidad | Fecha de Nacimiento | Valor Estimado | Tiempo de Contracto |
|---|---|---|---|---|---|---|
| Eneko Jauregi | Extremo Central | España | 13-07-1996 | £0.23 M | 30-06-2020 | |
| 7 | Iker Unzueta | Extremo Central | España | 04-08-1998 | £0.14 M | |
| 5 | Benat Garro | Defensa Central | España | 25-06-1997 | £0.14 M | |
| 21 | Aimar Sagastibeltza | Defensa Central | España | 05-07-1984 | £0.05 M | |
| 5 | Xabier Etxeita | Defensa Central | España | 31-10-1987 | £0.45 M | 30-06-2023 |
| 4 | Aitor Arregi Arrieta | Defensa Central | España | 19-05-1990 | £0.27 M | |
| 22 | Oscar Gil | Defensa Central | España | 14-06-1995 | £0.23 M | 30-06-2020 |
| 19 | Jon Irazabal | Lateral Izqueierdo | España | 28-11-1996 | £0.14 M | 30-06-2020 |
| 3 | Iosu Ozkoidi | Lateral Izqueierdo | España | 23-04-1990 | £0.09 M | 30-06-2021 |
| Mikel Zarrabeitia | Lateral Derecho | España | 20-07-1993 | £0.09 M | ||
| 2 | Aitor Aldalur | Lateral Derecho | España | 26-12-1991 | £0.23 M | |
| 12 | Mikel San José | Pivote | España | 30-05-1989 | £1.35 M | 30-06-2022 |
| 10 | Mikel Alvaro Salazar | Media Punta | España | 20-12-1982 | £0.05 M | |
| 23 | Asier Etxabaru | Media Punta | España | 07-04-1994 | £0.23 M | |
| 11 | Iker Seguin | Extremo Izqueierdo | España | 12-07-1989 | £0.23 M | |
| 20 | Inigo Orozco | Delantero Derecho | España | 16-07-1993 | £0.23 M | |
| 17 | Iker Amorrortu | Delantero Derecho | España | 17-10-1995 | £0.18 M | |
| Unai Uberuaga | Mediocentro | España | 18-05-2001 | £0.05 M | ||
| Mikel Zarrabeitia Ipina | Defensa | 20-07-1993 | ||||
| 30 | Unai Marino | Portero | España | 10-12-1999 | £0.09 M | |
| 1 | Mikel Saizar Soroa | Portero | España | 18-01-1983 | £0.05 M | 30-06-2016 |
| 13 | Roberto Santamaría | Portero | España | 17-02-1985 | £0.09 M | 30-06-2019 |
| 16 | Markel Lozano | Centrocampista | España | 03-05-1996 | £0.18 M |
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