Ulster face a trip to Bordeaux Begles in the last-16 of the Investec Champions Cup.
Bordeaux's demolition of the Hollywoodbets Sharks in their final European Champions Cup Pool 1 game allowed Ulster to sneak through to the knockout stages.
Bordeaux ran in 66 points to 12 winners over Sharks in the final pool one game.
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Elsewhere, Ronan O'Gara will welcome his former side Munster in the last 16 of the Investec Champions Cup. Castres beat Saracens, 32-24, to finish second behind Northampton in Pool three with Munster finishing third.
It means they travel to take on La Rochelle in the next round.
