James McCarthy has been withdrawn from the Republic of Ireland squad for their opening 2018 World Cup qualifier.

The Everton midfielder has been made unavailable for manager Martin O'Neill for Monday's first Group D fixture against Serbia in Belgrade because of a groin issue.

"Midfielder James McCarthy returned to his club following assessment from the FAI medical staff as he recovers from a groin injury," read a statement from the Football Association of Ireland.

McCarthy will try to return to fitness ahead of Everton's next Premier League match at Sunderland on September 12.