Without wanting to be all "he could have killed him" about it, that shove from Carvajal was diabolical. Sure football is a contact sport and I have no problem with players using their physicality, but I don't see how something like that isn't a straight red. It's not a harmless shove, he's pushed someone running at full pelt into some hoardings. It's not a tussle and there's no attempt to play the ball, its just a straight up attempt to hurt someone. It's way more dangerous than the kind of bad tackle you'd see someone sent off for.