Munster full-back Denis Hurley has been drafted into the Ireland squad as an extra back following the withdrawal of Brian O'Driscoll yesterday.
Hurley will come into camp today and train with the squad tomorrow.
Several Ireland players have also released back to the provinces for game time this weekend.
Paul Marshall, Craig Gilroy and Stephen Ferris have all been released to play for Ulster, as has Ronan O'Gara for Munster.
Ulster prop Declan Fitzpatrick, who was being managed on a graduated return-to-play programme for a concussion sustained last Friday night, suffered a setback and will now be rested until Monday, at which time he will recommence the testing procedures.
This makes Fitzpatrick unavailable for selection until he has completed this programme.