Wallabies centre Matt Giteau has been ruled out of this Satutday's Test against Argentina with a sternum injury. Although precautionary scans on his nose and chest cleared Giteau of any serious damage, management have opted to rest the 32-year old star for the next stage of the tournament. “I know how desperate Matthew was to play and continue to contribute to this group over the next week, his leadership and presence off the field will be missed," Michael Cheika said. “He’s one of the toughest members in the squad and we all witnessed during the match just how passionate Matthew is about representing his country again.” “It’s disappointing to lose him for this round, however knowing he will be right to go for the Bledisloe series is reassuring for the group and our fans.” “In the end, the decision sits with me. It’s going to be a big year for Gits and to send him over to Mendoza after a very physical test as well as a tight turnaround, just isn’t fair on hi