Munster have been handed the chance for revenge in the European Cup semi-final after drawing French side Castres away.
Castres dumped Declan Kidney's side out of the competition last year at the same stage and at the same venue.
However, Munster have already beaten Castres twice this year in the qualifying stages.
In the other side of the draw, Leicester have home advantage against Llanelli.
Meanwhile, the Welsh RFU have announced they have no plans to sack national coach Graham Henry.
Henry is under increasing pressure since Sunday's pathetic defeat by Ireland at Lansdowne Rd.