The third player signed by Ian Britton on loan from Wolverhampton Wanderers this season, following Mark Clyde and John Melligan.
Stocky six-foot defender Coleman, only just turned 20, has been a regular reserve teamer for Wolves but is yet to break into the Division One side.
The Cork-born Irish youth international boasts plenty of pace and is confident in possession.
He appears to be settling into first-team football after a tough debut against Macclesfield.
This season: 4 games, 1 substitute appearance.
Status: First-choice centre-back.
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