West Ham will need to file their twenty-five man squad with the Premier League at 5 pm on 16th October when the domestic transfer window ends.
Premier League clubs are allowed up to twenty-five players which must include eight homegrown players if they are to use the full 25 man squad.
Players under 21 do not count in the squad and clubs can use an unlimited number of young players.
Assuming Felipe Anderson leaves on-loan West Ham have just 20 players in the current squad of which eight are homegrown.
Michail Antonio (Home grown)
Fabian Balbuena
Aaron Cresswell (Home grown)
Issa Diop
Lukasz Fabianski
Pablo Fornals
Ryan Fredericks (Home grown)
Sebastien Haller
Manuel Lanzini
David Martin (Home grown)
Arthur Masuaku
Mark Noble (Home grown)
Angelo Ogbonna
Robert Snodgrass
Andriy Yarmolenko
Jarrod Bowen (Home grown)
Tomas Soucek
Darren Randolph (Home grown)
Vladimir Coufal
Declan Rice (Home grown)
Should they want to, West Ham has five squad places to fill before 16th October.