These names mentioned are still under consideration but I think Julian Nagelsmann is the bookmakers' favourite to replace Graham Potter. He is viewed as one of the most progressive young coaches in world football and has a number of admirers in England. But after seeing Chelsea sack two managers already this season, the club's level of expectation is set to be an important consideration for managers. Imo any replacement is welcome, but it will not change Chelsea's fate. Having an owner who puts fingers into everything and buys players like in a virtual game will stagnate progress.
you are right, Nagelsmann is at the forefront to become the new coach for chelsea this season as seriousness seems to be coming true after full talks with the former coach of bayern munich. If Nagelsmann officially becomes Chelsea new coach, I think big changes will be seen in Chelsea game because he is a coach who is able to develop the quality of his players to become star players like he did to choupo moting.
Chelsea must immediately announce a new coach because Chelsea will face Real Madrid in the UCL match which makes them need support and tactical experience from a coach who has long experience in the Champions League.