All three players are included in the squad that face a qualifier against Israel next month, but will join up for a 5 day training camp in Shropshire next Monday.
Patrick McCarthy has been in excellent since joining Leicester from Manchester City for £100,000, but endured a nightmare against Plymouth where he was substituted before half time.
Alan Sheehan started his first game for City at Plymouth, and looks to have a promising future ahead of him after a composed performance at left back.