Well, you say that there are arguments both ways, but to be honest I'd be interested in reading the argument that a forearm smash is a legal manouevre on a football pitch at any time. WWE, maybe. Football, not so much.
Totally, Llorente got booked for less against City.
Also, how the hell did Mata not get a red for his shocking tackle? Xhaka would have been deported if he'd done it. That's 3x stick on red cards they've got away with this season