Rudy Gestede has said there was no bite from him or Eric Bailly during a clash towards the end of Manchester United's 3-1 win at Middlesbrough.
The game was marred by an ugly melee after Gestede and Bailly had clashed, and there was pushing and shoving in the tunnel after the final whistle.
Ben Gibson thought teammate Gestede had been bitten, but the striker has denied any talk of there being a bite from either of them.
"We had a few words together, it was nothing major," the Middlesbrough striker said. "He gave me a hug and a kiss, that's it. I didn't feel anything.
"Ben thought he bit me, so that's why he reacted like he did. But I told him now we were just talking, there was no problem."
Tempers frayed again in the tunnel at the end of the match -- something neither United manager Jose Mourinho or caretaker Boro boss Steve Agnew shed any light on.
Agnew said: "I've been asked that -- and I was in early -- I didn't see anything. Obviously I'm picking up now that there's something gone on in the tunnel, but this group of players is so determined to start winning football matches that it's no concern to me."
However, United defender Phil Jones suggests it was little more than an expression of frustration from the hosts, who remain stuck in the bottom two of the Premier League following the loss.
"I think it was a bit of frustration creeping in on their behalf," he said. "It is a difficult situation, I was in it with Blackburn so I know how they feel.
"When emotions are high these things happen but it was something and nothing."
Agnew was encouraged by a battling display and remains convinced his team will get the points they need when they face the teams around them in the relegation fight.
He said: "To push Manchester United all the way was something that I was really pleased with. At 2-0, that's when the players showed their fighting spirit. The crowd played a massive part.
"We deserved the goal and on the balance of play at the time although there wasn't long to go, I could only see us equalising.
"I have every confidence and every belief, all the work that goes in behind the scenes with the staff and the players, that we are more than capable of winning football matches.
"The performance was intense, it was everything you want in terms of commitment. Of course we have got to start winning football matches, but I have been in this league before and I know that one game, one win, three points can change everything."