LEINSTER have been drawn to play London Wasps at Adams Park on the evening of Friday, April 5 in the Amlin Challenge Cup quarter-final.
Meanwhile, Rob Penney's Munster will take on Harlequins in their Heineken Cup quarter-final on Sunday, April 7 at the Twickenham Stoop.
Ulster meet Saracens on Saturday April 6, although no venue has yet been confirmed for the game.
Thursday, April 4
Gloucester Rugby v Biarritz Olympique, Kingsholm 8.0.
Friday, April 5
London Wasps v Leinster Rugby, Adams Park 8.0.
Perpignan v Toulouse, Stade Aimé Giral 7.0 (Irish time).
Saturday, April 6
Bath Rugby v Stade Francais Paris, Recreation Ground 1.0.
Semi-finals (26/27/28 April):
Semi-final 1: Perpignan or Toulouse v Bath or Stade Francais Paris. Semi-final 2: Wasps or Leinster v Gloucester or Biarritz. Final: RDS, Dublin; Friday, 17 May 20.00
Saturday April 6
ASM Clermont Auvergne v Montpellier, Stade Marcel Michelin 15.40; Saracens v Ulster Rugby, Venue TBC 18.30
Sunday April 7
Harlequins v Munster Rugby, Twickenham Stoop 14.00; Toulon v Leicester Tigers, Venue TBC 16.30.