A good start would be for the centre-backs to acknowledge that bear-hugging an opponent in the penalty box with the referee a few yards away is likely to end in calamity. The smattering of fans who applauded Koscielny might also give it some more thought. The players are in no position to blame the crowd, though. The “authority” Wenger says they lacked in this game has to be found from somewhere. Preferably, within.