Swansea's Jonjo Shelvey has been charged with violent conduct, the England Football Association has announced.
Shelvey clashed with Liverpool's Emre Can in Swansea's 4-1 Premier League defeat at Anfield on Monday night when he appeared to fling back an arm into the face of the German defender, but the incident went unpunished at the time with referee Andre Marriner waving play on.
"Swansea City's Jonjo Shelvey on Tuesday has been charged by The FA for violent conduct, following an incident in his side's fixture with Liverpool," said an FA statement.
"The incident, which was not seen by the match officials but caught on video, occurred during the fixture between the two sides at Anfield on Monday 29 December 2014.
"Shelvey has until 6pm on Wednesday 31 December 2014 to respond to the charge."
If found guilty, Shelvey, who was sent off at Everton at the start of November, could face a four-match ban, starting at QPR on New Year's Day.
Swansea boss Gary Monk said after the game he had yet to view the incident properly, but he defended Shelvey yesterday morning after seeing footage of it on the team bus on the way home from Liverpool.
"There was a motion towards the player, but it's not clear," Monk said at his press conference ahead of the Swans' trip to QPR tomorrow.
"I spoke to Jonjo on the way home and he said his intention was not to catch the player at all.
"He said the player was tugging on him and he was just trying to push him away from him to move it.
"I don't think it was an intentional elbow at all and the referee was perfectly placed. No-one had a better view of the incident than him. He felt it didn't warrant any more action and the game went on.
"There were no complaints from any of the players afterwards, so you have to trust the referee made the right decision - and we thought that he did."
Liverpool's England forward Raheem Sterling faces a similar anxious wait to see if he could also be punished after tangling with Swansea's Argentina central defender Federico Fernandez.