The hope of getting the team's performance out of decline is always a priority for management. Changing coaches is common in a club when the team's performance is not as expected. Chelsea management has high hopes for Enzo Maresca, they consider Enzo to be the most appropriate figure to improve Chelsea performance after he was successful with the previous team.
Changes in the squad began to be made gradually, since Enzo was appointed as head coach, management immediately dipped into their pockets to bring in new players. Next season there will be several new faces in the Chelsea squad, Enzo must be able to fulfill management's expectations after they have worked hard to see his team can compete in the title race.
In this regard, there are different approaches of coaches, but perhaps this is the ambition that can bring changes to the team. For example, Arteta and ten Hag spend a lot of money on transfers, but the result is completely different, it may be very difficult to change the team’s game without this, but this does not guarantee achieving results, although Manchester United beat City in the final, I am sure that ten Hag argues for this with good transfers, in the end beating City is a great achievement.