By GARY FITZGERALD

PREVIEW...
Castres v Harlequins
Today. Kick-off 5.30pm, Stade Pierre Fabre

Skills: Quins hooker Jack Walker

JERRY Flannery has placed the spotlight firmly on today’s man in the middle in France as Harlequins begin their bid to add the European crown to their English title.
The defence coach has no worries about how his players will cope in the face of an expected intimidating atmosphere at a noisy and lively Stade Pierre-Fabre.
But he insists the outcomes of the game could revolve around the performance of referee Nika Amashukeli in the heat of Champions C...