Re: what does Chelsea's starting XI look like next year
I think there'll be a lot of rotation because there's a serious logjam in a few positions. A lot of crafting the XI based on the opponent as well (which Lampard did a lot this year already).
First choice, I think, looks like this:
Werner
Pulisic - Mount - Ziyech
Kante - Kovacic
Chilwell (ideally) - Rudiger - Zouma - James/Azpi
Kepa
That said, I think it's very possible you could see Werner playing off Abraham (as he's done with Poulsen and Schick this year), with Ziyech and Pulisic (or Mount, RLC, or CHO) in the other two attacking midfield positions. There isn't space on the pitch for all 3 of Kovacic, Jorg, and Kante at the same time - they don't play well when they're all there - and the team is better off swapping one of them out for an advanced midfielder, be it Mount, RLC, or Ziyech playing inside. No matter what the XI is, I think the 3 in a 4-2-3-1 set-up will be super fluid in terms of positioning on the pitch, similar to when we set up with Mata, Hazard, and Oscar in those spots.