Gareth Barry keen to down play claims he was bitten by Diego Costa

SoccerBy Kevin Palmer
Costa appears to bite Barry (BBC)
Costa appears to bite Barry (BBC)

Everton manager Roberto Martinez has downplayed suggestions that Chelsea striker Diego Costa bit the neck of his midfielder Gareth Barry in a heated FA Cup quarter-final at Goodison Park.

Two Romelu Lukaku goals fired Everton to a 2-0 win against Chelsea as they secured a place in a Wembley semi-final, yet it was the antics of Costa that provided one of the main talking points after the game.

Costa was red carded after a long-running battle with Barry and as he left the field following his dismissal, TV footage appeared to show the Chelsea forward biting his rival as he lost his cool.

Yet Everton boss Martinez insisted there was "nothing to be worried about" after he confirmed he had spoken to Barry about the incident.

Barry was later sent off for a second bookable offence, but it is Costa's antics that are certain to be investigated by FA chiefs, with Chelsea interim boss Guus Hiddink non-committal on the clash.

"I didn't see the Diego Costa incident," stated the Dutchman. 

"If I had have seen it I would give proper comment so it is difficult to give a comment on that. Everton were going after him the whole game."

Twitter offered up a predictably feisty reaction to the incident, with Costa compared to Barcelona forward - and famous biting footballer - Luis Suarez: