Which managers are apparently seeing something in Colback anyway? Alan Pardew got him in on a free because Sam Allardyce was the only other fool interested.
He's capable of playing the ball forwards but he refuses to, maybe he'll change if his place in the side is threatened but it's definitely a physiological issue with him, whether or not it's as sinister as KI is suggesting (I think it is, just look at his pathetic dives to get him out of taking responsibility the past week).