Chelsea's poor performance is mainly due to some bad management decisions. It takes a long time for a new coach to stabilize a team. Stabilizing such a troubled team is no easy task for any coach. But the Chelsea management wants a quick improvement. This is not possible at all.
I don’t blame any of their coaches they signed or any player for their poor performance, in fact, I am putting the blame on the management and the owners for lacking patience with managers just because of the money they blindly spent on signing players and because they want quick results.
Take Arsenal for example; they spent some money for players, but they gave the manager some time to build his team, now Arteta is doing well since he was able to build his team and can now perform very well in all competitions. Despite Arteta not winning trophies, Arsenal management were patient, but I am sure they will win title next season.
At the same time I do not think you should blame the management of Chelsea for not being patient enough to give the managers time to improve the performance of the Chelsea team rather I think the managers should have worked so hard in helping the management of Chelsea to improve the performance of the team and to win trophies which is the main reason why the management invested heavily in purchasing players into the team.
The management of Arsenal is different from that of Chelsea that is what we need to understand and looking at the time that has been given to the Arsenal coach Arteta and how close he has gone without winning the league don't you think the management of Arsenal is getting tired of him already? Arsenal didn't invest much money like Chelsea they have a better team now that is already competing with City for the trophy but I think the new season will decide if Arteta is loved for not winning trophies for Arsenal or not.