Seamus Coleman is a doubt for next month's Nations League games against Denmark and Wales.
Martin O'Neill's team face both sides at home, Denmark on October 13th and Wales three days later.
Coleman was an absentee on Tuesday evening, due to a foot injury, as Ireland drew 1-1 with Poland in Wroclaw. He had played the full 90 minutes of the 4-1 defeat to Wales last week.
Following the game, O'Neill elaborated on the injury which had prevented the Everton fullback from playing.
"Seamus went for a scan, he has a little stress fracture, which is a concern," O'Neill told RTÉ.
He could easily have got a flight home, but he stayed with the team.
He is a great captain, a really great captain. He is inspirational and obviously we hope he is back in time for the games coming up.
It was reported on Tuesday that Coleman had acted as a peace broker between Harry Arter and Roy Keane with the former now said to be open to returning to the Ireland set-up.
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