England duo Danny Cipriani and Josh Lewsey will be reunited in Wasps' back division tomorrow following their much-publicised training ground spat earlier this week.
Wasps go into the Heineken Cup Pool Two battle against Adams Park visitors Castres reeling from five defeats in all competitions so far this term.
Coach Ian McGeechan’s side know they must get off to a flier ahead of meeting pool favourites Leinster in Dublin next Saturday.
“Playing Wasps away in our first game certainly throws us in at the deep end,” said Castres skipper Lionel Nallet.
“Our main objective this season is to find some confidence again and reassure ourselves against the best European teams, considering our poor start in the Top 14 (French championship).
“We need to prove we can achieve things in another tournament. We still have some bad habits that we need to change, and the players need to work on that aspect.
“The players will take advantage of this competition, play without constraints, and enjoy a more flexible style of play to express themselves and try things.”