London Wasps have been paired with Racing-Metro 92 in the pool stages of the European Challenge Cup for next season.
Also in Pool Four are Bayonne and Calvisano, in what looks to be the toughest of the five pools.
Connacht will face Worcester Warriors, Montpellier and newcomers Olympus Rugby XV Madrid in Pool 2.
Last season's beaten finalists Bourgoin face English new boys Leeds Carnegie, Overmach Parma and Bucuresti Oaks.
The five Tier 1 teams London Wasps, Saracens, Bourgoin, Newcastle Falcons and Worcester Warriors were kept apart in separate pools.
EUROPEAN CHALLENGE CUP 2009/10 POOLS
POOL 1: Bourgoin, Leeds Carnegie, Overmach Rugby Parma, Bucuresti Oaks
POOL 2: Worcester Warriors, Connacht Rugby, Montpellier, Olympus Rugby XV Madrid
POOL 3: Saracens, Castres Olympique, Toulon, Rugby Rovigo
POOL 4: London Wasps, Rugby Calvisano, Bayonne, Racing-Metro 92
POOL 5: Newcastle Falcons, Montauban, Petrarca Rugby, Albi