Robbie Keane and Darron Gibson out of Republic squad

Robbie Keane and Darron Gibson of the Republic of Ireland

Republic of Ireland boss Martin O'Neill has released Robbie Keane and Darron Gibson from his squad for Tuesday's friendly against the United States.

Striker Keane, a substitute in Friday's 1-0 Euro 2016 qualifying defeat by Scotland, returns to LA Galaxy, who face Seattle in the MLS play-offs.

Everton midfielder Gibson, meanwhile, is heading back to Merseyside for treatment on a minor knee problem.

Tuesday's game in Dublin is the Republic's final outing of 2014.

They will look to end the year on a high note after suffering the first defeat of their Euro 2016 qualifying campaign in Glasgow.