I honestly don't understand what Chelsea hope to achieve with this kind of tactics. They believe in buying young players alone. The thing is if you want to get those young players, you have to give them time to develop and it will be best to have a manager that can handle them, but Chelsea don't have that patience.
In football, young players grown better when they're surrounded by experienced top player. Look at all the players in history from Kaka to Messi, to even Yamal currently these players grow better around more experienced players.
There's a reason Enzo performs better at Argentina than Chelsea. In Argentina he's surrounded by older experienced players.
I don't know what Chelsea's plan is, but it's clearly not working out for them.
Buying those young players and mixing them up with older players at least let there be some experience in the team, to me I even prefer to have more older players to guide the younger ones. The owner is trying to build Chelsea to be like Barcelona where they have young players who can deliver but he tried it last season and it didn't work and still repeating same thing and this time is even worse because I don't see Chelsea getting anything this season.
Any manager who care to manage a team as Chelsea need to put it to the owner that they need to be the ones in charge of getting players but I think they blindly sign the contract because of money and forget about their reputation, the current Chelsea manager might regret leaving Leicester City if things ain't done properly and fast because the season is on the way to get started.