When football managers – and rugby coaches – talk about training sessions having “an edge” about them, it normally only means one thing. There’s been a fight. It may not have been full-on, fists swinging, bare-knuckle bruising. But someone, somewhere has over-stepped the mark and tempers have boiled over. Nine times out of 10, managers love this kind of thing. It proves their players are more like thin, hungry dogs, than fat, sleepy cats and they look forward to unleashing the hounds on Saturday afternoon.