Gordon D'Arcy is unlikely to play in the potential RBS Six Nations title decider against Wales, according to Ireland coach Eddie O'Sullivan.
Gordon D'Arcy has played just 20 minutes in the 2005 Six Nations
D'Arcy was ruled out of the 26-19 defeat by France with the hamstring injury suffered in the championship opener against Italy.
"I do not think Gordon is going to make the Wales match the way things are going," said O'Sullivan.
"There has been uncertainty over his injury and it is not looking good."
D'Arcy was voted last year's Six Nations player of the tournament and his presence is considered important in relieving much of the creative burden shouldered by skipper Brian O'Driscoll.
Shane Horgan has filled in for D'Arcy in the past but also missed out against France because of an injured thumb. Horgan's fitness will be reassessed before Tuesday's team announcement.
Should either Horgan or D'Arcy be given the all clear for Wales, Ulster veteran Kevin Maggs will drop the bench after lining-up at inside centre against the French.