I think both clubs are in disarray in their own ways. Both have great managers but not idea players. United have good players on paper but who seem to have really poor attitudes and undermine the manager eventually.
Chelsea have spent a lot of money but have a completely new squad who have had little time together and are very raw.
It’s easy to say “Chelsea should because they spent 1bn”. But I am talking about their current squads, manager, board, situation etc
I mean the obvious answer is neither. They have managers whose winning pedigree consists of winning Eredevise with Ajax and Ligue 1 with PSG. Neither have shown they can handle a dressing room with the kind of world class, top dollar talent it would take to win the league, and neither seems especially adept at handling the pressures of a billion dollar squad. Both will likely be gone by the end of next season.