West Ham United boss Sam Allardyce has had a pop at Everton rival Roberto Martinez ahead of tonight's FA Cup replay.

Allardyce feels the Spaniard is not "flexible" enough with his playing system.

The Hammers boss said of his Everton counterpart: "I think that Roberto, like every other manager, has his own style.

"I'm a little bit more flexible than Roberto - he is a total believer in one style.

"Where I have come from, which is part-time at Limerick where we met up on a Thursday and 50 per cent of your players turned up on Sunday from Dublin you put them out on the field to win.

"Flexibility teaches you that you have a philosophy in the way you want to play but if that way of playing doesn't suit the players you have you cannot keep that philosophy.

"For me it has always been about adapting and suiting the players the best way possible to win football matches."