Rio Ave
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Diogo Nascimento
Olympiakos PiraeusLoan14 Jul 2026- Gustavo ManchaOlympiakos PiraeusLoan1 Feb 2026
Leonardo Buta
UdineseLoan1 Feb 2026
Alfonso Pastor
LevanteFree Transfer1 Sept 2025
Tamás Nikitscher
ValladolidTransfer1 Sept 2025
Eric Emanuel da Silva Moreira
Nottingham ForestLoan1 Sept 2025
O. RichardsNottingham ForestLoan1 Sept 2025- Tamás NikitscherValladolidTransfer30 Aug 2025
D. Špikić
Dinamo ZagrebTransfer15 Aug 2025
Marc Gual
Legia WarszawaTransfer9 Aug 2025- Marc GualLegia WarszawaTransfer7 Aug 2025
Antonis PapakanellosOlympiakos PiraeusLoan9 Jul 2025
N. AthanasiouOlympiakos PiraeusLoan8 Jul 2025
N. AbbeyOlympiakos PiraeusTransfer1 Jul 2025
Andreas NdojOlympiakos PiraeusTransfer1 Jul 2025
J. PanzoNottingham ForestFree Transfer1 Jul 2025- A. SinaOlympiakos PiraeusFree agent30 Jun 2025
- N. AbbeyOlympiakos Piraeus—29 Jun 2025
- Andreas NdojOlympiakos Piraeus—29 Jun 2025
Theofanis BakoulasOlympiakos PiraeusLoan3 Feb 2025
- Antonis PapakanellosOlympiakos PiraeusReturn from loan29 Jun 2026
- Gustavo ManchaOlympiakos PiraeusReturn from loan29 Jun 2026
- Leonardo ButaUdineseReturn from loan29 Jun 2026
- O. RichardsNottingham ForestReturn from loan29 Jun 2026
- Marc Gual
Kairat AlmatyFree agent11 Jun 2026 - Marc GualKairat AlmatyFree agent10 Jun 2026
ClaytonOlympiakos PiraeusTransfer2 Feb 2026- N. AthanasiouOlympiakos PiraeusReturn from loan1 Feb 2026
- ClaytonOlympiakos PiraeusTransfer1 Feb 2026
André LuizOlympiakos PiraeusTransfer28 Jan 2026- André LuizOlympiakos PiraeusTransfer27 Jan 2026
- Theofanis BakoulasOlympiakos PiraeusReturn from loan15 Jan 2026
- Eric Emanuel da Silva MoreiraNottingham ForestReturn from loan13 Jan 2026
K. KostoulasOlympiakos Piraeus—1 Jul 2025- Theofanis BakoulasOlympiakos Piraeus—1 Jul 2025
- N. AbbeyOlympiakos Piraeus—1 Jul 2025
- Andreas NdojOlympiakos Piraeus—1 Jul 2025
Tiago Morais
LilleBack from Loan1 Jul 2025- Kiko Bondoso
Maccabi Tel Aviv—1 Jul 2025 
Martim Neto
Benfica—1 Jul 2025