The 21-year-old Fijian was the youngest member of the Provincial Barbarians side which narrowly lost to the Lions on their tour of New Zealand last summer.
The Ireland star will remain with Ulster to take up a coaching role.
Saracens were crowned Aviva Premiership champions for a third time in four seasons today after ending Exeter's title reign at Twickenham.
The Leinster team for Saturday evening's GUINNESS PRO14 final against the Scarlets at the Aviva Stadium (kick-off 6pm) has been announced by head coach Leo Cullen.
Isa Nacewa is to captain Leinster in what will be his 185th and final appearance for the province.
Connacht Rugby and the IRFU have announced Andy Friend as the province's new head coach. Friend has signed a three-year contract and will arrive in the Sportsground in late June to oversee pre-season training...
Ireland begin their Pool C campaign against hosts France in Perpignan next Wednesday.
The Ireland Under-20 management have confirmed two changes to the squad to travel to the World Rugby Under-20 Championship in France this weekend.