But Bonnaire won't be available to lead the charge having suffered a nasty arm injury in the weekend's 19-12 defeat to Toulouse at the Stade Ernest Wallon.
The veteran back rower, who was been with Clermont since 2008 and is now in his 12th season of European rugby, has fractured his right forearm and faces a six-week spell on the sidelines as a result. That means he won't be available for the Round 5 trip to London or the final pool game at home to fellow French outfit Racing Metro a week on Sunday.
"This injury does not need an operation but it will force Julien to have his arm immobilised for several weeks. He will be out of action for an estimated period of six weeks," read a statement from the Top14 leaders.
Saturday's game will therefore be the first time in three seasons that Clermont have named a Heineken Cup matchday squad without Bonnaire in it. The 35-year-old has played in all four games so far this term, having been an ever present in their nine fixtures last season and all eight the year before.
Capped 75 times by France, Bonnaire last missed a Heineken Cup game in the 2010/11 season when he sat out the final pool game at Saracens. His Heineken Cup tally stands at 62 matches for Clermont and Bourgoin, with a further five Amlin Challenge Cup appearances, and only two of those haven't come as a member of the starting XV.
Bonnaire's absence isn't the only blow for Clermont, either, with Thierry Lacrampe and Regan King joining star scrum-half Morgan Parra on the sidelines. Lacrampe sprained his medial collateral ligament in his right knee at Toulouse and won't feature against Quins or Racing, while centre King faces six weeks out after pulling a calf muscle.
Lacrampe's absence leaves coach Vern Cotter with a dilemma regarding his replacements as Ludovic Radoslavjevic is now the only fit first-team scrum-half at the club.
Lock Julien Pierre, back rower Damien Chouly and prop Daniel Kotze are also injury concerns for the weekend, with Pierre struggling with a back injury, Kotze dealing with a partial dislocation of his shoulder, and Chouly also experiencing pain in his shoulder, although the latter is confident it will pass in time for Saturday.
Clermont will make a decision on their involvement later this week, with their matchday squad due to be named on Friday.
There was at least some good news for Cotter and co, though, with the news that centre Aurelien Rougerie (ribs), Portugal flank Julien Bardy (ribs), Samoan back row Fritz Lee (chest), Canada lock Jamie Cudmore (knock) and flank Alexandre Lapandry (ankle) should all be fit to feature in England.