Moyes has cast doubt on Jack Wilshere's future after he was left out of the squad which beat Charlton 3-0 on Tuesday night.
Wilshere is out of favour at the London Stadium as injuries continue to prevent him from playing.
Moyes said: "He rolled his ankle in training yesterday or he would have been playing tonight or around the squad. It is the first time since lockdown that he has had an injury.
"I don't know [if he'll remain a West Ham player], I don't know but we just have to wait and see don't we."