Robbie Henshaw is continuing return to play protocols.
Iain Henderson is one of 11 Irish players released back to their provinces for this weekend's United Rugby Championship fixtures.
The Ulster captain didn't feature against Italy at the weekend, after recording a positive Covid-19 test.
Out-half Jack Carty has returned to Connacht, ahead of their meeting with Edinburgh on Friday.
Robbie Henshaw will continue through the graduated return to play process this week.
A total of 27 players have been retained by head coach Andy Farrell as Ireland prepare for the Six Nations game against England on Saturday week.
Released to Provinces for URC Fixtures
- Robert Baloucoune (Ulster/Enniskillen) 2 caps
- Jack Carty (Buccaneers/Connacht) 11 caps
- Craig Casey (Munster/Shannon) 5 caps
- Gavin Coombes (Munster/Young Munster) 2 caps
- Dave Heffernan (Connacht/Buccaneers) 6 caps
- James Hume (Ulster/Banbridge) 3 caps
- Iain Henderson (Ulster/Academy) 66 caps
- Jordan Larmour (Leinster/St Mary’s College) 30 caps
- Ross Molony (Leinster/UCD) uncapped
- Jimmy O’Brien (Leinster/Naas) uncapped
- Nick Timoney (Ulster/Banbridge) 2 caps
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