West Ham boss Manuel Pellegrini is ready to see five senior players moved on this summer.
The Daily Star says one of the first players who could leave in the upcoming transfer window is Pedro Obiang.
Another who is expected to leave is Spanish striker Luca Perez.
The ex-Gunner signed for a reported £4m last summer and has only managed three goals this season in just over a dozen appearances.
Injury-prone target-man Andy Carroll will not be offered a new contract.
During Caroll's time with West Ham, he has made 126 league appearances, but only scored 26 goals in his seven seasons with the club.