Johnny Sexton is ruled out of Leinster's European Champions Cup opener against Castres because of a tight hamstring.
Team news as Wasps host Leinster in Saturday's European Champions Cup fixture at the Ricoh Arena (15:15 GMT).
Saracens fly-half Charlie Hodgson tells BBC London that he is looking forward to playing against Racing Metro fly-half Johnny Sexton during their European Champions Cup quarter-final tie on Sunday.
Six players make their first European starts for Leinster in Saturday's Champions Cup game against Bath at RDS Arena.
Ulster book a Pro12 semi-final against Leinster and end the Ospreys' hopes of a European Champions Cup spot.