Even though the new season hasn't started yet, I believe Manchester City, Arsenal, Liverpool and Manchester United have a big chance to be the favorites for the title. The main favorites are Manchester City, followed by Arsenal, but I doubt the other two teams I mentioned as well.
If Manchester City are really capable of winning the Premier League title next season, then it will be their 4th title in a row, too good to be true. But I also believe that some Premier League teams will try to stop Manchester City's dominance, even if it's difficult.
I think the 3 clubs you mention are going to be hot this coming season, I'm particulalry can't wait to see what effect of Declan Rice on Arsenal, it was one of the bigest player to ever signed in English League, it will be a flop if he doesn't play to meet their expectation and the same expectations people will be expecting from Manchester United after De Gea move and Onana replacement, I want to see Erik Teng decision on Onana becomes true and worth the heat and critisms.
I hope you know that in the midst of this transfer season after Manchester City won the treble, they are yet to signed any new player into the club, only the loan players have returned to the club and I don't think they will have more opportunity to play because of discomforty and disunity of the existing players but wouldn't Guardiola do something to solidify Manchester City squad, I hope they are not making the mistake Real Madrid did last year after they won the Champions League and refuse to signed in new players, season changes you know.