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.