Leinster will travel to Toulon in the Heineken cup quarter finals and will play Munster in the semi finals if the Reds overcome Toulose at Thomond Park.
Ulster welcome Saracens to Ravenhill.
MUnster secured their passage with a 38-6 win over Edinburgh while Ulster beat Leicester at Welford Road and Leinster beat Ospreys 36-3 on Friday night.
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Former Munster and Ireland Prop Marcus Horan spoke to me about the form of all the teams involved and the probability of Jamie Heaslip staying in Ireland.