Retiring duo Scott Fardy and Michael Bent bowed out on a winning note as Leinster finished the Rainbow Cup with a victory over Dragons.
Ireland Number 8 Caelan Doris is set to play his first game of rugby since being concussed against Munster in January.
The tighthead has played 89 times for the Crusaders and won three Super Rugby titles as well as last year's Super Rugby Aotearoa championship.
Lifting the PRO14 trophy usually only means one thing for a player at Leinster, that he is leaving the club at the end of the season.
Josh Thomas’ late charge-down try guided Ospreys to a sensational 24-19 comeback win over Guinness PRO14 giants Leinster at the RDS.
Holders Leinster booked their place in the Guinness PRO14 final by securing a 38-19 bonus-point victory over their only challengers Ulster to ensure they now cannot be caught.
Leinster will get one foot in the door of the Guinness PRO14 final on March 27 if they can topple Ulster in the Kingspan on Saturday night.
The Ireland and Leinster flanker spent 18 months on the sidelines following a horrific knee injury sustained in April 2019.
Leinster have rung 13 changes to their starting XV after last weekend's loss, but retention of Johnny Sexton means a new role for Ross Byrne.
Ryan Baird is to set to start at six for Leinster, as Leo Cullen looks to run the positional experiment denied to him by the cancellation of Leinster and Munster's St Stephen's Day derby.