Leinster head coach Leo Cullen admits they face a "serious challenge" against Bordeaux in this afternoon's Investec Champions Cup final.
The URC champions have picked 14 Ireland internationals to start, they're joined by All-Black Rieko Ioane.
Victory for Leinster over the title holders would see them crowned champions for a fifth time, and kick-off in Bilbao is at a quarter-to-three.
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Connacht can look forward to Champions Cup rugby next season.
Stuart Lancaster's side's place in the competition was confirmed by Ulster's loss to Montpellier in last night's Challenge Cup final.
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Ulster's wait for a first trophy in 20 years continues after suffering a 59-26 thrashing in Bilbao.
