Southampton striker Shane Long has pulled out of the Republic of Ireland quad.
He is replaced by Aiden O'Brien for the upcoming Euro 2020 qualifiers.
Long is suffering from a groin injury that has troubled him at club level recently.
Meanwhile, Richard Keough is available to play, after he turned down surgery on a broken hand to participate in the upcoming game against Gibraltar.
Ireland also face Georgia, with both games representing a chance for them to grab valuable points in the qualification process.