Ireland scrum-half Conor Murray will continue to remain on the sidelines as he is set to undergo rehabilitation from a long-standing neck injury with his club Munster.
The 29-year-old last played for Joe Schmidt's side during the June series against Australia and was not named in the autumn international squad of Ireland due to his neck problem.
Murray joined the three-day training camp last week and was supervised by the IRFU medical team but has now returned back to his club Munster for further recovery.
"Yeah, he's not in camp. Again it's another one that we're just monitoring and I'm still getting up to speed with all that as well," said Ireland assistant coach
"It's something that obviously not being here this week, they're freshening him up and it is just trying to tick some boxes to get back in the frame.
"We already have three half-backs there so there's no point in carrying one more."
This also means Murray is ruled out of the game against Argentina next weekend and is also highly doubtful for the Test against All Blacks on 17th November.
Meanwhile, Rob Kearney is also a doubtful starter for next Saturday's game against the Pumas following a shoulder injury.