Everton midfielder Gareth Barry has said he was not bitten by Diego Costa, reports Press Association Sport, after the Chelsea striker was sent off during the club's FA Cup quarterfinal defeat to Everton at Goodison Park.
Costa denied biting Barry during the altercation that saw him dismissed in Chelsea's 2-0 loss on Saturday.
The Spain international, who had fought a running battle with Barry throughout, reacted angrily to a tackle from Barry late in the second half and confronted him aggressively.
Referee Michael Oliver responded by issuing Costa with his first red card since arriving in English football and replays appeared to show the Spain international opening his mouth towards Barry's neck while the pair were tangled together.
Barry was also booked for his role in the incident and received his second yellow card shortly afterwards for a tackle on Cesc Fabregas.
Barry did not speak to the media after the game, but PA Sport has been told he has privately dismissed the allegation of a bite.
The Football Association is awaiting referee Michael Oliver's report before making a judgement on the incident.
Information from the Press Association was used in this report.