Leinster, Munster and Ulster discovered the make-up of their 2017/18 Champions Cup pools this afternoon.
There was good news for Munster prior to the main draw as they were moved in tier one for the tournament following a preliminary draw.
Ronan O'Gara will once again return to Thomond Park as Munster drew Racing 92 in Pool 4. Rassie Erasmus' side will also face Leicester and Castres. It means Munster face two of the same sides as last year's pool stage.
Leinster were drawn in Pool 3 against Aviva Premiership champions Exeter Chiefs, Montpellier and Glasgow.
Ulster will face Wasps, La Rochelle and Harlequins in Pool 1.
Champions Cup draw 2017/18
Pool 1
Wasps, La Rochelle, Ulster, Harlequins
Pool 2
Clermont, Saracens, Ospreys, Northampton
Pool 3
Exeter Chiefs, Leinster, Montpellier, Glasgow
Pool 4
Munster, Racing 92, Leicester, Castres Olympique
Pool 5
Scarlets, Toulon, Bath, Benneton
The final of next year's tournament will be played at the San Mamés Stadium in Bilbao.
Connacht were drawn in Pool 5 of the Challenge Cup. They will face Brive, Worcester and Oyonnax.