I'm afraid i don't think there is any chance of Fulham beating City, Fulham are a very decent team and they have had a great start to life back in the EPL, but City are definitely going to be too strong for them,
Upset can happen in football but against team like Manchester city, that's always unlikely to happen. Teams like Manchester united can play foolishly against smaller team and come out with a defeat but teams like Manchester city uses those teams to get goal advantages and not just point. Looking at the stats, in the last 5 games that both clubs has played, Manchester city has beaten Fulham in all five games and scoring more than once in those games therefore same scenario is likely to happen when both teams meet on Saturday.
At the moment Auba is also still a little difficult to adapt well at Chelsea apart from Potter maybe for Brighton he is not going well but this is his first defeat during his time at Chelsea for the Premiere League so it can still be improved and he must know what to do. wrong in this game.
Aubameyang would want to perform very well against his old club to give Chelsea the advantage, I don't think he's a flop so far, just haven't been very lucky at the goal post but his build up play has been brilliant. I'll love potter to pair Aubameyang and Broja with Pulisic as the front three against arsenal. Aubameyang looked good coming form the wing in the last champion league game. Maybe if he can get a way to play both strikers then we could get the best of the duo.