Jonathan Walters will not feature for Ireland in Friday's friendly international against Switzerland due to a hamstring injury, but should be fit to face Slovakia next week.
The Ireland player of the year scored for Stoke City at the weekend but has sat out training sessions in Dublin over the last two days.
Walters has returned to his club for treatment on the injury but will return to the camp to watch Friday's game before taking an active part in Tuesday's fixture.
Speaking after training today, manager Martin O'Neill said that he will "definitely play" in Tuesday's game against Slovakia.
Midfielder Jeff Hendrick has been ruled out and returned to Derby County for treatment on his shoulder injury. Robbie Keane did not train again today.
"Jeff has got a shoulder injury that he has had to deal with for quite a number of weeks now so we thought it best going back and getting is sorted a club level," said O'Neill.
"Jon, I think he will be fit for Tuesday, he just thought he might be best to go home for a day or two. He should be back on Friday night to watch the game. He will definetly play on Tuesday.
"Robbie Keane sat out training again but there is no real problem. He will be okay and will be available for any of the two games."
The Ireland manager said that goalkeepers Darren Randolph and Rob Elliot will both start one game each of the Aviva double-header.
O'Neill also confirmed that Manchester City midfielder Jack Byrne will play with the Ireland Under-21 side against Italy in Waterford tomorrow.