An update is expected today on the scan which John Egan underwent yesterday.
The Sheffield United defender picked up a knock playing in their Premier League draw with Everton at the weekend.
The Republic of Ireland manager Stephen Kenny will not want to be without the 30-year-old Cork native for the upcoming European Championship qualifiers.
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Ireland take on France in Paris on Thursday ahead of the Dutch visiting Dublin on Sunday.
Kenny's side were unlucky to lose 1-0 to France in Dublin earlier this year.
Centre-back Nathan Collins feels the Boys in Green are getting closer and closer to a big result
