British Lions manager Donal Lenihan will make the draw for this season's Heineken European Cup semi-finals in Dublin tonight.
Irish challengers Munster are joined by the English pair of Leicester and Gloucester, along with France's Stade Francais, the tournament favourites.
The first and third teams out of the hat will have home nation advantage, although at a neutral venue. Munster are expected to opt for Lansdowne Rd in such a case.
The final in May is already guaranteed for Paris if Stade Francais win through, with Ireland a first alternative, followed by England.