My issue with this isn't did Aguero throw an elbow or not, I've seen the footage and I believe he's intentionally thrown his arm at Reid. It's a red card offence, and a 3 game ban. My issue is with the "retrospective" element of the potential punishment. This can only happen if the referee didn't actually see the incident. Now there's no way anyone can be in any doubt, when watching the footage back, that Andre Marriner definitely saw the incident, he's 10 yards away looking right at it. For him to claim he didn't see it is ridiculous, it's a joke, in fact it's dishonest. What he means is "I made a mistake". He saw it happen, but his misjudged it, as referees do time and again on all manner of decisions throughout a game. You can't have a referee, after the match, looking over all his decisions and going "got that one wrong, I'd better change what I think of it". You make your decision at the time and you live by it. I assume we now get a 4-1 win do we, as the linesman "misjudged" the Aguero offside and odds are he'd have scored? No, of course we don't, and rightly so. You see it, you make a decision, and that's it. You don't (or shouldn't) get to have a second chance at it days later. This is the FA, and the referees association, however, so we shouldn't expect anything other than them covering their own backs and making decisions they think will make them generally popular.