Bundee Aki has received a warning for confronting referee Mathieu Raynal following Connacht's Heineken Champions Cup defeat to Leicester Tigers.
The English Premiership leaders scored a try in the last play of the game to deny the Westerners a famous victory at the Sportsground.
The Ireland centre exchanged words with the official, who will take charge of Ireland against England at Twickenham, believing that the score should have been disallowed.
He subsequently issued an apology, saying "Like to apologise about my action towards the referee and officials, kids who were watching. Absolutely not needed in this game.
"Emotions were high and that is certainly not an excuse for my actions. Definitely will take the loss on the chin and will be looking at myself."
Today European Professional Club Rugby issued a warning to the 31-year-old, who is expected to be named in Andy Farrell’s Ireland squad for the Guinness Six Nations when it is announced later today.
"The Connacht Rugby centre, Bundee Aki, has been issued with a Citing Commissioner Warning arising from his club's Heineken Champions Cup, Round 3 match against Leicester Tigers on Saturday, 15 January 2022," said EPCR.
"The warning was for an act of dissent towards the match referee, Mathieu Raynal (France), in contravention of Law 9.28. The match Citing Commissioner was Jeff Mark (Wales).
"Players who accumulate three Citing Commissioner Warnings, or who are shown three yellow cards for Foul Play offences, or a combination of both, during the pool stages and knockout stages of the Heineken Champions Cup and the EPCR Challenge Cup, will be required to attend a Disciplinary Hearing."
Meanwhile, Wasps back Jacob Umaga will miss Sunday’s Champions Cup game against Munster after being handed a four-week suspension for a high tackle on Toulouse scrum-half Martin Page Relo during the English side’s 30-22 win on Saturday.