Kelly was Wright's (& Fly's & Leppa's) manager when he was in sports management, so you wouldn't think there was an issue between them...
Apparently the tension between the two only started during this season. I wonder if that tension had something to do with Wrighty telling Ned that he still was unsure of returning to the club, whilst in the meantime the club has reshuffled the footy department roles to accommodate Wrighty's return to the club, which now we know, was a waste of time...