Coleman is a right-back and has represented the Republic of Ireland both at Under-21 and Under-23 level, making his international debut for the Under-21s in a friendly against Sweden in 2008. 

He began as a central midfielder before switching to full-back.

Coleman signed for Sligo Rovers in 2006 having begun his career at hometown side Killybegs.

The Donegal-born full-back signed for the Blues at the end of the January transfer window in 2009, having had reported interest from Celtic, Birmingham City, and Ipswich Town.

Coleman linked up with Andy Holden and Alan Stubbs in the Blues' reserve team squad, but by the time the 2009/10 season came around he was on the fringes of the first team squad.

But he was dealt a major blow in pre-season when a freak foot infection threatened his career. Coleman battled back though, and was handed a senior start in, of all places, the Stadium of Light in Benfica.

He then played at Bolton and AEK Athens before turning in a fabulous performance on his home debut, setting up two goals against Tottenham in December 2009.