Marseille or Brighton calling out to Leinster
Leinster will have to travel to Marseille or Brighton for the semi-final as long as they come through Bath in The Champions Cup at The Aviva Stadium on Saturday.
Defending champions Toulon will be heavy favourites to deal with Wasps on Sunday and have earmarked the Stade Velodrome as their venue of choice for the final four.
Should Wasps cause a sensation in France, they will earn the reward of a home semi-final at the American Express Community Stadium, a World Cup venue, with both the semi-finals set for the weekend of April 18/19.
If Clermont-Auvergne can extend their unbeaten European home record to 23 straight against Northampton, they will host the other semi-final at Saint-Etienne.
The Saints have the carrot of a home appointment against the winners between Racing Metro 92 and Saracens at the Ricoh Arena in Coventry.
In The Challenge Cup, Connacht will kick-off a spellbinding European quarter-final weekend at Gloucester on Friday evening.
An upset there would enable The Westerners to host either Exeter Chiefs or Newcastle Falcons at The Sportsground in the semi-final on the April 17/18/19.