"I would rate him (Caucau) as probably the best attacking player in the world, " said Paterson.

BBC: SPORT | Rugby Union | Paterson relishes captain's role

Paterson also watched Caucau in action for Agen against his club Edinburgh in this season's Heineken Cup.

BBC: SPORT | Rugby Union | Paterson relishes captain's role

But the Scots expect a tougher challenge on Saturday from a side containing CauCau, also described by Paterson as "one of the biggest impact players the world has seen in a long time".

BBC: SPORT | Rugby Union | Caucau called in to face Scotland