Champions Cup holders Saracens have been drawn against Toulon while Bath will meet Bristol in the Challenge Cup.
Montpellier produced a bruising display to beat Castres 28-9 and qualify for a TOP14 semi-final against Toulon.
Dan Carter is set to return for Racing 92's Top 14 play-off clash against Toulouse, live on Sky Sports.
Toulon joined Clermont Auvergne in reaching the Top 14 semi-finals on Sunday, as Montpellier and Racing 92 gained home barrage play-offs.
Former Leicester lock Steve Mafi is among seven new recruits signed for next season by Castres.
A new father and some former Super Rugby stars feature in our team of the week along with a World Cup winning fly-half.
Team of the week includes strong semi-finalists and leaders of the pack from the Top 14 and Super Rugby.
Harlequins are looking to extend their unbeaten run as they take on Montpellier in Friday's Challenge Cup action.
Fast and easy online Sky Sports upgrade
Rugby Union news, direct to your mobile
Watch the action with a Sky Sports Pass
Win in our free to enter competitions section
We've a host of top class rugby union action
Barbarians v South Africa
5th November 2016