Leinster will be without Adam Byrne for the rest of the season.
The winger's campaign has been ended by a quad injury picked up in their recent defeat to Glasgow.
Sean Cronin will sit out the Blues' trip to Ulster in the Guinness Pro14 this Saturday with a calf injury but the province have not put a timeline on his recovery.
Rhys Ruddock is following the return-to-play protocols after feeling unwell after the captain's run ahead of last weekend's victory over Toulouse in the Heineken Champions Cup.
Prop Andrew Porter and scrum-half Jamison Gibson-Park are doubts for this weekend with pectorial and hamstring injuries respectively.
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