Ireland were dealt another injury blow on Monday when it was confirmed that neither Paul O'Connell nor Stephen Ferris will play against Argentina on November 24th.
According to Ireland team manager Mick Kearney, Ulster flank Ferris has "significant ankle ligament damage", ruling him out of the November internationals.
O'Connell has been unable to shake off a back injury that prevented him from running out against the Springboks and joins fellow stalwarts Brian O'Driscoll, Rory Best, Rob Kearney and Sean O'Brien on the sidelines for the game against the Pumas.
Leinster scrum-half Eoin Reddan is also in doubt for Saturday's non-cap clash with Fiji and will see a specialist this week after bruising an ankle.
Ulster's Paul Marshall has been called in as cover.