Leinster will be hoping to reach the final, which takes place in Dublin.
Leinster have been drawn to play Racing and Gloucester in Pool A of next season's European Champions Cup.
After a dramatic late defeat in this season's final, Leo Cullen's men will play both sides home and away before the knockout stages culminate in a final at the Aviva Stadium.
Elsewhere, Munster will renew acquaintances with Toulouse in Pool B, as well as facing Northampton.
Toulouse beat Munster on penalties in last season’s quarter-finals.
Also in Pool B are Ulster, and they’ll play Sale and defending champions La Rochelle.
In the Challenge Cup, Connacht have been drawn to play Brive and Newcastle.
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