Leo Cullen warns that Leinster are facing an "ambitious and hungry" Ulster side in Saturday's Champions Cup sell-out last 16 clash at the Aviva Stadium (5.30pm).
Hugo Keenan returns for Leinster after completing his return to play protocols, but Garry Ringrose and Caelan Doris have been stood down for the weekend.
Along with the loss of club skipper Johnny Sexton after his groin op, the Blues will have to pull out all the stops in what is expected to be a tight affair, as it was when Leinster edged their 2019 quarter-final.
