Manchester United could be without Wayne Rooney for their Round of 16 tie if UEFA decide to take action after his tackle on Aalbord's Kasper Risgard in Wednesday night's Champions League tie.
The striker has come in for criticism after a robust performance which also saw Michael Jakobsen hit with a heavy challenge. He appeared to stamp on Risgard who stayed down in pain after the incident.
Risgard has claimed Rooney would have been sent off had the game been at any other venue than Old Trafford. If UEFA choose to take action the England international could be handed a suspension which would kick in when the knockout rounds begin at the end of February. United will hope he escapes with no more than a fine if a charge is brought.
Risgard was left with stud marks on his chest as a lasting reminder of Rooney's challenge as the pair fell to the ground late in the first half. Jakobsen then got the United player's studs down the back of his calf after the break. It provided a reminder of Rooney's questionable temperament.
"I do not think the referee saw it. Anywhere else but this place it would have been a red card,'' said Risgard. "I have some big marks and I do not think it looks good on television.
"There was also another incident with Rooney where he threw an arm and hurt one of our players. But these challenges happen in football and he did come and apologise to me after the game.''
UEFA will study video evidence before deciding whether to take action. A UEFA spokesperson said: "We are aware of the incident and the disciplinary panel will study the footage and newspaper reports before deciding whether to take action.''