All four Irish provinces have learned their opponents.
Leinster will play Racing and Gloucester in the pool stages of next season's Champions Cup.
Leo Cullen's side have been drawn in Pool A.
In Pool B, Munster are set to face Toulouse and Northampton, while Ulster will meet defending champions La Rochelle and Sale.
In the Challenge Cup, Connacht will play Brive and Newcastle in Pool A.

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