David Moyes says Stuart Pearce will fire up West Ham's under-performing players and their disillusioned fans.
New Hammers manager Moyes has drafted the former England defender as part of his coaching team along with Alan Irvine and Billy McKinlay.
No-nonsense full-back Pearce spent two seasons with West Ham towards the end of his career, making 50 appearances and scoring three goals.
The former Manchester City and England Under-21 boss has been out of management since leaving Nottingham Forest two-and-a-half years ago.