Favouring City over United in the weekend derby can't be guaranteed for me, it's going to be a tough game for both sides and I don't think United will be going into that derby looking weak for City. After watching United 3 games in the EPL this season it's obvious there has being so much improvement than what they were last season. The only difficulty they haven't yet solved is ability to be scoring goals that much when chances are created unlike City that has a top 9 like Erling Haaland that hardly miss goal chances.
Personally, I only saw a more or less normal game from United in one game - against Arsenal. But all clubs have some good games, especially United. Bookmakers see this game like this:
1.67 - 4.06 - 4.75
It's sad to see that even against a crisis City United are rated so low. But still, it seems to me that City is overrated. No matter how bad United are City are not good enough to be rated that highly in the derby. It might be worth betting on United Double Chance.