West Ham defender Joey O'Brien has withdrawn from the Republic of Ireland squad through injury.

The 28-year-old, who met up with his international colleagues in Malahide on Sunday, is to return to his club for treatment on a knee injury.

O'Brien's withdrawal means manager Martin O'Neill now has 26 players at his disposal as he prepares for tomorrow night's friendly against Oman at the Aviva Stadium and the opening Euro 2016 qualifier in Georgia on Sunday.

Ireland Prepare For Oman