West Ham defender Joey O'Brien has withdrawn from the Republic of Ireland squad for their end-of-season matches.
O'Brien was included in the provisional 32-man party for the games against Turkey, Italy, Costa Rica and Portugal when manager Martin O'Neill named it last week.
However, he will now not join up and will concentrate instead on his own fitness programme ahead of the 2014/15 campaign.
O'Brien missed much of the second half of last season with a shoulder injury sustained in January, only returning in the middle of April and finally making his first-team return on Sunday as Manchester City took the Premier League title with a win over the Hammers.
A spokesman for the Football Association of Ireland said: "Following discussions between FAI and West Ham's medical teams, Joey O'Brien has been released from Martin O'Neill's provisional squad to manage his off season medical programme."
O'Brien will not be replaced in the initial party for the clashes with Turkey in Dublin on May 25, Italy at Craven Cottage on May 31, Costa Rica in Philadelphia on June 6 and the Portugal in New Jersey on June 10.