Yes, Chelsea have really improved and this year they can return to the ranks of the big clubs in the Premier League and in Europe. They have amply demonstrated this and are still demonstrating it. I, on the other hand, think that Paris will suffer a regression, citing the team they beat.
PSG, who were defeated by Chelsea in the Club World Cup, will not immediately experience a setback when competing in the Champions League next season. PSG will also strive to win the Champions League trophy again, although it will be very difficult for PSG, as several other teams will also be doing the same next season. But generally speaking, PSG will not be immediately weakened just because of their defeat to Chelsea, although I also admit that Chelsea have indeed made quite positive changes recently.
I don't think PSG will get the opportunity to win the Champions League this coming season anymore, because they are some big club that will definitely challenge them this time around, and try there best to stop them from winning it this season. Psg as not won Champions league trophy before that is the main reason they do all there best to achieve it against inter Milan. But am very sure that psg won't be the favorite to achieve the trophy this season anymore. They are some club that are really preparing for the Champions League this time. Barcelona as failed last season with all there performance inter Milan eliminate them, new season is hear again and am thinking that Hansi Flick goals now is to achieve the Champions league trophy for Barcelona this season.
Manchester City are in a bad form last season and Guadiola will Really do is best to win the ucl this season and Madrid's have achieve new coach and xabi Alonso is training the players very well and this season will be very tough, know any club will try to giveup and make the opponent get the opportunity to win the ucl trophy. Chelsea didn't win league and champions league but at last they get the big cup that many clubs are praying for to achieve CWC. And many club that do well last season will do more better to win the ucl. So I don't think that PSG will get the opportunity they get to win the ucl last season they will get it these time around again, let wait how the competition will goes and see which club will be the favorite to win it this time around.