Advantages: can get the ball forward to create attacks, makes a killer pass on occasion, directs the players around him to make sure no-one's slacking off, takes corners reasonably well and slows the game down when necessary with simple passes.
Disadvantages: lightweight, gets pushed off the ball quite easily, slow, misplaces a few passes right in the vital areas in midfield (as expected like Emma says), doesn't get stuck in, rarely gets in a position to take a shot, bad temper and could upset others in the dressing room.
A pretty limited player but he would probably work for Bristol City. No offense but I don't think you'll make the top half and that's probably a fair reflection of Kilkenny's ability.