Potter was superb at Brighton but he came to Chelsea and became ass.
Potter is a good coach, no doubt about that, but he is also an average coach and the success that Brighton recorded while he was still there was not just because he was a good coach, it was also because the players in the club a very good and technically sound that is why even after he left them they did not start losing games but currently in the Premier League I still in a very good position. Chelsea needs an experienced coach that is not average.
How Potter can be a good coach, he is the reason why Chslea failed in the champions league even after he left and he is the reason for the current position of Chelsea in the premier league he also got no achievements in the team he was coaching expert for Östersund, he definitely can't be a good option for any team doesn't matter if we are talking about Brighton or Chelsea.