Candidates for the left
Has played centre all season, but turned in a superb performance on the wing against the Ospreys last weekend, although that was on the right. Of the options available, Mafi has the best chance of matching Takudzwa Ngwenya pace-wise and has the big-hitting ability to unsettle Iain Balshaw under the high ball.
Played left wing in four of the pool games, picking up a try in the win away to Perpignan and did very well off the bench last Saturday after a spell out with injury. Strong, physical player with a big boot and superb kick-chase.
With two Heineken Cup medals from the left wing position, Dowling has the experience and proven ability needed. Started there in the quarter-final win over Northampton, but hasn't played since due to a knee injury.