Montpellier, Harlequins and Cardiff Blues have all been drawn into the same pool for the 2015/2016 European Rugby Challenge Cup.
They will be joined in Pool 3 by Calvisano, while champions Gloucester face trips to La Rochelle and Zebre, as well as a clash with rivals Worcester in Pool 4.
Elsewhere, Russian newcomers Enisei-STM will take on Connacht, Brive and Newcastle in Pool 1, while 2013 Top 14 champions Castres have a tough group also featuring Sale, the Dragons and Pau.
Finally, runners-up Edinburgh will face a rematch against the team they beat in the semi-finals this year, London Irish, as well French duo Grenoble and Agen.
Challenge Cup Pools