Chelsea should work with the defenders they have now and forget buying more, let them build the connection/communication among themselves instead of adding and then lack level of commitment, loosing the ball at critical points will only send the team down the table.
Well, I'm a person who thinks that Chelsea should do Something to be able to go further in the Premier League. I say one thing: they have to change everything that is necessary, and it's not a question of luck, it's a question of attitude. They have changed everything that can be changed , Think that now they have to adapt to everything that the Premier League means, because things will start to work out for them, but they have to work very hard, because they have a very difficult path ahead of them with Man City, with Liverpool , with all these teams that are Aways number 1.
I hoped they adapt to the style of play before the season begins, Maresca changed everything about the team right from the base of what Pochettino did during his time. Now the club is facing a hard time winning their matches played so far, right now they just headed to the second half with loosing yet, 1: 0 and it's really something to worry about. The rate at which Chelsea conceded last season, seems like the same they would continue this season because it's being shown during the preseason games. The Premier league is a tough one, If they would love to take a good spot on the league then they should adapt very quickly at the beginning of the season and not during the end of the season unless they end where they ended once again.