The Connacht winger has a foot injury
Mack Hansen looks set to miss the Lions' first Test with Australia with a foot injury.
The Connacht winger has been nursing the issue since the weekend win over an Invitational 15, and he's not expected to be part of Andy Farrell's team when its named tomorrow.
Farrell could pick up to eight Irish starters, with Hugo Keenan being tipped to come into the 15 shirt with Blair Kinghorn a major doubt.
Australia have given an upbeat update on their squad with Joe Schmidt set to have a string of first-choice players fit to play.
Assistant coach Geoff Parling has revealed that forwards Will Skelton and Rob Valetini and scrum-half Jake Gordon are available for the weekend.
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