Hansen's making a good recovery from a foot injury but Naas's Jamie Osborne has been ruled out.
Connacht pair Mack Hansen and Darragh Murray have been called up to the Ireland squad ahead of the Autumn Nations Series test against Australia.
Hansen's making a good recovery from a foot injury but Naas's Jamie Osborne has been ruled out of the rest of the series with a shoulder knock.
Lock forward - Murray - was capped during the Summer Tour and has played 42 times for the Westerners.
Garry Ringrose and Josh van der Flier are both nursing hamstring strains ahead of Saturday's game while Stuart McCloskey is expected to train this week.

Tuesday Morning Sports Update
All Ireland Football Championship Opening Round Fixtures Confirmed
Tommy O'Brien Among Injury Doubts For Leinster's Champion Cup Final On Saturday
Monday Morning Sports Update
Sunday Evening Sports Update
Mourinho's Benefica Go Unbeaten but Miss Title
Brave Kildare Fall Short in Leinster Ladies Final
Chelsea Appoint Xabi Alonso as New Manager