There will be a French flavour to Munster's closing two Pool One games, with Roman Poite and Pascal Gauzere set to referee their two must-win encounters.
Poite will take charge of Munster’s away to Saracens on Saturday January 17th, with Gauzere in the middle for the closing home game against Sale on Sunday January 25th.
Anthony Foley’s side trail Saracens by three points, with Clermont Auvergne on top of Pool One on 14 points.
Leinster's home game on January 17th against Pool Two whipping boys Castres will be refereed by Italy's Marius Mitrea, while the big trip to play Wasps on January 24th will see Jerome Garces take charge.
Wales’ Leighton Hodges will referee Ulster’s daunting trip to take on double defending champions Toulon on January 17th, with Poite returning to Ireland for a second week to take charge of the closing Pool Three game against Leicester.