Munster and Leinster have been handed tough draws for the Heineken cup next season.
Leinster are in Pool 2 with French champions Clermont, Saracens and Racing Metro while Munster are in Pool 3 with the Ospreys, London Irish and Toulon.
Ulster face Heineken Cup finalists Biarritz, Bath and Italian side Aironi.
Heineken Cup draw for the 2010/2011 competition:
Pool One: Cardiff Blues, Northampton, Edinburgh, Castres.
Pool Two: Leinster, Clermont Auvergne, Saracens, Racing-Metro 92.
Pool Three: Munster, Ospreys, London Irish, Toulon.
Pool Four: Biarritz, Bath, Ulster, Aironi.
Pool Five: Leicester, Scarlets, Perpignan, Treviso.
Pool Six: Toulouse, London Wasps, Glasgow Warriors, Newport Gwent Dragons.