Indeed they are!
But looking at the players, the crowd, the ref - not one person even imagined it was remotely offside, none of the defenders appealed or anything. Much as I would have liked VAR for a few of our not given decisions in the last few months, it's this sort of delay between...
I must say, looking at the 'goal' on you tube, they're a bit unlucky there. It's not as though it was played through to Aguero by a city player, it just deflected off him. Cruel.