Sam Allardyce coy over claims Momo Diame could leave West Ham for knockdown fee in January

West Ham boss Sam Allardyce has refused to reveal details about Momo Diame's release clause amid suggestions that several Premier League clubs want the in-form midfielder.

Diame, who arrived at Upton Park on a free transfer from Wigan during the summer, has been one of the signings of the season so far.

His introduction as a half-time substitute during West Ham's recent 3-1 win against Chelsea fuelled the Hammers' second-half revival and he was rewarded for his efforts with a well-deserved goal.

Recent reports suggested the 25-year-old has an escape clause in his contract which would allow him to leave east London for a knockdown fee.

But Allardyce has not confirmed whether or not this is the case, before expressing his belief that scouts are monitoring the Senegal star.

He said: "I can't discuss personal contracts, obviously. But when people start playing consistently well scouts are always watching and agents get very busy."