Munster head coach Anthony Foley will be hoping that Nenagh’s Donnacha Ryan will get the all-clear from his knee injury ahead of tomorrow's European Champions Cup tie against Stade Francais in Paris.
Ulster have both Craig Gilroy and Darren Cave back in contention for their trip to face Oyannax.
Connacht, meanwhile, are preparing for their trip to face Guinness Pro-12 leaders the Scarlets on Sunday.
Later tonight, Leinster will be among the sides in action in the Pro12.
Head coach Leo Cullen has recalled the likes of Sean O'Brien, Jamie Heaslip and Luke Fitzgerald for tonight's trip to the Liberty Stadium to take-on the Ospreys.
A win tonight for Leinster would send them top of the table.
Kick-off in Swansea is at 19:45.
