Coughlan has been sidelined since the Ulster game in September, his place in the starting XV been filled since then by Peter O'Mahony, Paddy Butler and on one occasion O'Donnell who is also likely to be involved on Saturday having limped out of the A game against Leinster a fortnight ago.

Internationals involved in the Argentina squad last weekend Ronan O'Gara, Simon Zebo, Keith Earls, Dave Kilcoyne, Donncha O'Callaghan and Donnacha Ryan, all trained in UL yesterday suggesting they may all be involved at some stage at the weekend and although Peter O'Mahony and Conor Murray were in attendance they sat out the session.

Murray is receiving treatment to what Rob Penney described as 'a wee knee niggle', but both are expected to train ahead of the Heineken Cup match with Saracens.