Sale and Worcester have been drawn in the same pool for next season's Amlin Challenge Cup.
Bayonne have completed the signing of former Crusaders and Blues fly-half Stephen Brett.
A losing bonus point for Montpellier in Bayonne was enough to eliminate Perpignan from the race for the play-offs.
Second takes on third in the pick of the Top 14 fixtures with Clermont set to entertain Toulouse on Saturday.
Racing-Métro secured a crucial result in the race for the Top 14 play-offs with a bonus-point win over Mont-de-Marsan.
A last-gasp try from Vincent Clerc saw Toulouse claim a 27-26 win over Racing Metro, ending the Parisians' winning run.
Toulon ran in six tries in a comprehensive 50-15 thumping of Biarritz at the Stade Mayol in the Top 14 on Saturday.
Top 14 leaders Toulon host Biarritz this weekend before fourth-placed Castres face the unenviable task of travelling to Clermont.
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