Andy Carroll and Samir Nasri will leave West Ham this summer when their contracts expire, the club have confirmed.
Adrian and Spanish striker Toni Martinez are also set to depart as the Hammers part company with more than 10 players.
Midfield duo Moses Makasi and Noha Sylvestre, defenders Vashon Neufville and Josh Pask will also depart, as will scholars Mason Barrett, Kevin Dalipi, Jay Mingi and Odysseas Spyridis.
Joint-Chairmen David Sullivan and David Gold released the following statement, in which they paid tribute to the two long-serving players set to leave.
“Andy and Adrian have both been great servants to West Ham United throughout their time at the Club and we thank them for their loyalty and commitment to the Claret and Blue cause.