Donegal have made an official complaint that one of their players was on the receiving end of a bite during Sunday's Division One NFL draw with Dublin.
Paddy McBrearty is understood to have a significant graze consistent with teeth marks on his shoulder, which he had to have checked out in Letterkenny hospital on Sunday night.
Referee Padraig Hughes was formally notified of the allegation at half-time by Donegal officials and it has been mentioned in his report on the match.
But since neither he nor any of his officials witnessed the alleged incident happening, building a case will be difficult.
Hughes himself was in the wars when he twisted ankle ligaments and had to be stretchered off and replaced by Michael Duffy in the 45th minute.
It is also believed that Dublin were made aware of the allegation after the match through contact between the medical staff of both teams.
Donegal are angered by the alleged incident but apart from confirming that the referee was informed they do not want to make an issue of it and were happy to leave it with the referee.
They are understood to have taken pictures of McBrearty's shoulder to support the claims made to referee Hughes at half-time if required for any further investigation.
It will be up to the Central Competitions Controls Committee (CCCC), who met yesterday, to initiate any investigation.
Donegal manager Jim McGuinness was not as calm as he normally is after games and he was clearly perturbed by a number of matters that occurred during the match.
“A lot of stuff went on there that didn't add up,” he admitted, a possible reference to the decision not to give Rory Kavanagh a penalty or possibly this alleged biting incident.
McBrearty is the star of the Donegal U-21 team who play Cavan in tomorrow night's Ulster final in Enniskillen. His participation is not thought to be in doubt because of the cut to his shoulder he received.
l It has maybe been forgotten how back in 2011, Eoin Bradley produced some of the most exciting football in the country.
His performance and goal against Armagh in the Ulster semi-final had him almost assured of an All-Star, before a cruciate injury intervened.
On Sunday he hit five points as Derry reclaimed their place among the top flight with victory over a shadow Westmeath team, two days after his grandfather passed away.
“There has not been a lot of sleep got in the last couple of days,” said Bradley.
“But it was good to get out and get away from everything from a couple of hours. It is just one of those things that happens in everyone's life so you just have to get on with it.”