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Where: Allianz Riviera
When: 16.40 (GMT)
Watch live: Click here to watch on NowTV from Sky!
The last time the Blues tangled with Toulon away from their natural home of Stade Mayol they beat them to the Amlin Challenge Cup title. That was in Marseilles in 2010 and since then they have beaten the reigning Heineken Cup champions at the Arms Park.
So, will Toulon live to rue the day they opted to switch the crunch tie in Pool 2 to the much bigger Allianz Riviera in Nice? Toulon have yet to lose a Heineken Cup game at home, but they will have to be at their best to beat the Blues and stay on course for the knock-out phase.
Davies lost the services of outside half Rhys Patchell in his last game against the Dragons, ruled out for four months because of a knee injury, but have got Welsh loose head prop Gethin Jenkins back in the fold after four frustrating weeks on the sidelines.
Jenkins could be a key figure in the Blues side, given that he was part of the Toulon squad that won the Heineken Cup last season. He will know better than anyone what makes Toulon tick at home and will need to galvanise the Blues pack for what is sure to be a trial of strength.
Toulon are in no mood to surrender their hard earned European title, although they have lost their last two games in the Top 14 – 14-9 in Paris against Racing Metro 92 and 22-21 last weekend at home against Grenoble.
The shock defeat to Grenoble meant Toulon dropped to fifth place in the Top 14, eight points behind the leaders ASM Clermont Auvergne. They won’t want to make it three defeats in a row!