Chelsea have the history of winning the Champions League in the condition of the team not going well in the English League, but this season cannot be used as a reference that Chelsea can repeat the same thing. The midfield is indeed quite crucial because it is the brain of a series of attacks that are trying to be built and if the attack line is creative enough in building attacks it will be easier for strikers to score goals. Of course all crucial positions in football and I don't think Chelsea have not lacked good players, it's just that so far it has not been fully maximized in contributing to the team.
Chelsea have made quite a number of changes to their squad from last season, it is normal that after making many changes that they team will need time to play together and build good team chemistry so I think Chelsea are currently lacking that connection between the players especially the incomings. Let?s see how quickly and well they can blend in and make maximum impact this season.
Many times new arrivals change the fate of a team because they don't find much affinity with each other, but I have to say that there are many players who, once in the team, manage to do very well and have fun and make others have fun and play well with their teammates too, so it's not a given that they don't get along well with each other.
In this case, PSG may be the best example, at one time PSG spent a lot of money to bring the world's biggest stars to their team just to surprise the football world and improve the club, but PSG did not improve there. The reason is that although the club had good quality, each player did not have a good relationship with each other, which is why no one helped each other on the field and this affected the team. There are many differences between PSG at that time and PSG today. The current PSG team may not have such a big star, but now everyone who plays for this team has a good relationship with each of the players, which is why the team's performance is now much better. That is why before bringing a player to the club, the manager must think about whether the person they are bringing will be able to have a good relationship with everyone or whether all the other players in the team will be able to accept this player.