They are so bad but it’s just the level of inconsistency despite having so many good players. I believe if a better coach should handle these players they will be more productive than under Ten Hag. I doubt if he is even able to identify the areas that needs to be improved on, he seem confused and at this point I would advise they replace him with a better manager that can lead the team to glory.
I've mentioned times without number that the problem with Chelsea lies on their coach, I feel like he lacked the ability to effectively manage the players at his disposal. I don't think it is true to say that Chelsea lacks the squad depth they require to challenge the status quo but lacks the ability for effective management of those players. We have the likes of Romelu Lukaku who haven't been used effectively yet a lot of money have been spent on his transfer and so on.
Chelsea's main problem under Todd Boehly was management, so it was not surprising to see how difficult it was to bring in a good coach. I don't think it's difficult for them to spend money just to hire a talented coach, but the situation is very different.
The main issue is that the owner made numerous requests to the coach, and management attempted to find someone who agreed with Chelsea's owner to carry out his orders to the coach. For some reasons, Chelsea still lacks squad depth due to the club's abundance of young stars.
Lukaku performed poorly in the EPL, which could explain why Chelsea rejected him; however, Poch offered him the opportunity to play in the PL, which he declined.