I don't really see the need to rest Haaland, he isn't on the world cup and he will get plenty of rest. If he isn't ready I am expecting Pep to not risk him in last 20 minutes since City should dispatch Fulham quite easy.
My first sub on the bench is Zaha and I have no problem letting him cover in case Haaland/Foden/Wilson don't start. I am more concerned with Foden since I sort of expect Pep to give him just 15 minutes at the end. Even if all three don't play I also have Dunk and Andersen on bench to cover for them. They could all do well with a bit of luck but I am really hoping for City to start with both Haaland and Foden in first 11.
I think this will pan out as I expected it to with Haaland, I think Guardiola is going to give a couple of minutes, he was only listed on the bench simply because he's fit enough to play, and that'd mess up those that kept the faith of having as their captain, if doesn't get more just the point for being subbed in, but 15-20 minutes is literally more than enough for Haaland to get a decent return.
But Haaland only getting subbed-in point surely can't be any worse than those tossed it towards Joao Cancelo.