#1 The return of attractive football
Chelsea as a club have not been known for playing aesthetic football, with an emphasis rather placed on winning at all costs, no matter the manner in which the result is achieved.
A key proponent for the club getting this image was Jose Mourinho, as during the Portuguese managers reign, the club gained a reputation of being pragmatic, while not having too many admirers among neutral fans.
This win-at-all-cost mentality came to the fore during the club's successful run to the Champions League trophy in 2012, with Chelsea playing on the back foot for most of their knockout matches, particularly in the semifinal and final triumphs over Barcelona and Bayern Munich respectively, where they were practically boxed in their own half for the entirety of the matches without showing any form of attacking intent.
Further managerial appointments of Antonio Conte and Rafa Benitez further increased Chelsea's perceived negativity, as the two coaches are not known to be the most obsessed with beauty on the field of play.
Maurizio Sarri has however changed all that. Under his tutelage, Napoli became one of the most attractive sides in all of Europe, winning plenty admirers with their enthralling style of play.
Much of the same has been applied at Chelsea, as Sarriball has begun to take a sweeping effect on the club's playing pattern, with the London club now more focused on playing through the channels and holding onto possession.