Ireland wing James Lowe is a doubt for the Six Nations game against Wales after he sustained a groin injury in his side’s 42-21 victory over England.
The 33-year-old was forced off in the first half of Saturday’s win at Twickenham and on Monday the IRFU said he “will continue to be monitored by the medical team” before the game against Wales on 6 March.
The IRFU also confirmed that back row Jack Conan will return to training this week after missing the the record win over England through illness.
Eleven players have been released from Andy Farrell’s squad to play for their provinces in the United Rugby Championship this weekend with the Six Nations on a down week.
Nathan Doak, Cormac Izuchukwu, Jude Postlethwaite, Tom Stewart and Bryn Ward will return to Ulster for their game away to Ospreys on Saturday.
Harry Byrne and Cian Prendergast are available for Leinster’s trip to Cardiff on Friday night while Darragh Murray will return to Connacht for their home game against Glasgow Warriors.
Recent debutant Edwin Edogbo, Tom Farrell and Michael Milne are available for Munster’s home game against Zebre on Saturday.
The rest of the Ireland squad will reconvene on Wednesday for a two-day camp in Dublin.