Saracens will have home advantage if they reach the semi-finals of the Heineken Cup.

The Guinness Premiership club, who were the top-seeded team in the quarter-finals, will play either Gloucester or Munster if they get past the Ospreys following the semi-final draw.

First-time quarter-finalists, London Irish, were paired at home against either Toulouse or Cardiff Blues in the first semi-final - providing they get past previous finalists Perpignan.

Semi-final draw:

London Irish/Perpignan v Toulouse/Cardiff Blues, Saracens/Ospreys v Gloucester/Munster.