- A. Lekuna
BasconiaFree agent—30 Jun 2026 
Aingeru Olabarrieta
FC AndorraReturn from loan—29 Jun 2026
Álvaro Djaló
Al-GharafaReturn from loan—29 Jun 2026- C. Mutilva
Arenas GetxoReturn from loan—29 Jun 2026 
Peio Canales
Racing SantanderReturn from loan—29 Jun 2026- C. MutilvaArenas GetxoReturn from loan—29 Jun 2026
Hugo Rincón
GironaReturn from loan—29 Jun 2026
Unai Vencedor
LevanteReturn from loan—29 Jun 2026
Oier GastesiArenas GetxoReturn from loan—29 Jun 2026
Iker Varela
MirandesReturn from loan—29 Jun 2026
Beñat Gerenabarrena
CastellónReturn from loan—29 Jun 2026
Julen Agirrezabala
ValenciaReturn from loan—29 Jun 2026
Efe Korkut Martin
1. FC NürnbergTransfer—31 Jan 2026
Mikel SantosBasconia——11 Sept 2025
Aymeric Laporte
Al-NassrTransfer€10.00m10 Sept 2025
Gorosabel
EspanyolLoan—31 Aug 2026
A. Boiro
West HamLoan—31 Aug 2026
E. Gift
EibarLoan—30 Aug 2026- Unai Vencedor
BurgosFree agent—30 Aug 2026 - Aingeru Olabarrieta
EldenseLoan—30 Aug 2026 - M. Gibelalde
GrasshoppersTransfer—17 Aug 2026 - M. GibelaldeGrasshoppersTransfer—17 Aug 2026
- C. Mutilva
Unionistas de SalamancaFree agent—13 Aug 2026 - C. MutilvaUnionistas de SalamancaFree agent—12 Aug 2026
- A. LekunaArenas GetxoLoan—10 Aug 2026
- Julen AgirrezabalaRacing SantanderTransfer€4.50m9 Aug 2026
Mikel Vesga
AlmeriaFree agent—1 Aug 2026- Iker Varela
IbizaFree agent—16 Jul 2026 
Urko Izeta
Cadiz——10 Jul 2026
Unai Gómez
UdineseTransfer€4.50m7 Jul 2026
Eder Garcia
CordobaLoan—7 Jul 2026- E. GarciaCordobaLoan—7 Jul 2026
Aimar Duñabeitia
Sporting GijonTransfer—7 Jul 2026