You can thank FIFA and their ridiculous rule that the onfield referee's decision is final - even when he's clearly ballsed it up!You can also thank Clattenburg and his frankly bizarre decision to award a freekick for something he clearly hadn't seen, thereby preventing the FA from doing anything about it retrospectively.There is so much about the game of football that makes no sense!!
Common sense, how are Manu expected to win everything if they have to stick to the same rules as everyone else?