I understand why Maresca is keen to get players he knows well into the team, but it seems to me that first he should make good use of those that Chelsea already have. Chelsea had a good end of the season and Pochettino built a good base from which it would be worth starting to work, rather than trying to change everything again and attract new and especially young players, which means building the team in a new way.
Maresca has different tactics so it's natural that he wants players who he thinks can carry out his tactics, and this is a common thing that happens to all coaches.
I agree with Maresca, and I hope that Chelsea management fully supports all of Maresca's wishes to be able to build Chelsea the way he wants.
In as much as the problems most of the clubs normally have is mostly as a result of inexperienced coaching but in the case of Chelsea i wouldn't put all the blame on there coach, though before I use to think that there coach is actually the reason why they have not been going far on the premier League but I have come to realize that the coach and the players needs to come together with one mind and understanding before they could possibly go far on every season, however the reason why I will no longer blame the coach is that even the other coach before him could not improve the club and there performance was still almost like this.
Chelsea's new coach Enzo Maresca is a coach who is quite popular now after he succeeded in bringing Leicester promotion to the Premier League, which proves that Enzo Maresca has good qualities.
I think there's no need to doubt it.