The Ireland medical staff are monitoring the fitness of David Wallace after the Munster flanker suffered a flare up of an ankle injury.
Wallace was the only member of the 22-man squad - selected for Saturday's opening Autumn Test against South Africa - to sit out Monday morning's training session at St. Gerard's School in Bray.
The injury resurfaced over the weekend and a decision on his availability is expected today. The 30-year-old has started each of Ireland's last eight internationals since earning a recall to the side for the 2006 RBS 6 Nations opener against Italy in February.
Irish coach Eddie O'Sullivan will announce his team and replacements for the South African Test this afternoon at a media conference in Killiney.
Details of the Ireland 'A' squad that will take on Australia 'A' in an international fixture at Thomond Park on Wednesday week (November 15) will also be released today.
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