The obvious team that everyone else has pointed out will be Chelsea. They have a good squad and now they have a good manager, he will make them a far better team than this season. I think they will run us close to the title.
Liverpool are the team I'm really not sure about. Once VVD is back then in theory they should start to improve, but they look so jaded to me and the Europa league is going to drain them as it does with every team who enter it. I would really applaud any team who won the league and Europa at the same time! :) However, if Klopp can get some more salbutamol in for them and freshen the squad up, I think he will deserve a lot of credit. I think he will get them back into the top 4 but don't see a title challenge from them. The days of 90+ points have gone for them.
I don't see United doing what they did this season. They've overachieved partly because Arsenal, Spurs and Liverpool have had terrible seasons. I think they'll go back to 4th/5th again next year. Leicester are a tricky one as they look a very good team but I don't see them improving and will do well to hold on to Madison, Tielemens etc.
What really gets me though is that the best managers in the league are obviously Pep, Tuchel, Klopp and they all had a great track record beforehand. It show what happens to teams when you bring in the right manager for your team. We identified Pep and set the club up for him. Liverpool gave Klopp time and money to build the squad he wanted. Tuchel came in and just did the basics - fix the defence. Next year he will put his mark on the squad.
It staggers me that clubs like United are happy to let Frodo have a crack, Chelsea with Lampard, Mason at the moment with Spurs, Arsenal with Arteta. It really is false economy. If I was a Chairman, I would be looking at City and Liverpool and trying to copy them. I wouldn't be thinking "Ooh Rio Ferdinand was a good player and sounds good on MOTD, I bet he's good". I'd be doing the opposite.
My top 4 next year:
City
Chelsea
Liverpool
United