It remains unclear if Jamie Heaslip will be fit for Saturday's Six Nations opener with Italy in Rome.
The Leinster back-row is carrying a shoulder injury sustained against Ulster on January 3rd and could be rested.
The 31-year-old could be replaced by Peter O'Mahony at No 8 with the returning Sean O'Brien possibly lining out at blindside flanker.
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Ireland coach Joe Schmidt names his team for the important match tomorrow.