The change of manager at the beginning of the season may have an adverse effect on Chelsea's performance this season. Chelsea have some internal problems and its obviously visible now in the team's performances from game to game, the dismissal of the previous coach Thomas Tuchel is also as a result of this problems. I hope Todd Boehly understands getting a new manager will not bring immediate solutions to the problems and improve the team's performance immediately.
Chelsea problem is Majorly cause by the change of boards and pattern of signing. The era of the new owner is quite different from Abramovich as he changed everything concerning Chelsea. The blues have all the players needed but failing to scored and win games is one thing Thomas Tuchel encounter before he got sacked. That problem doesn't pause there, it's continue and the new boss, Graham Potter will be the one that would suffer it. He can still survive and take the new to another level, afterall he did that with Brighton and now he would do it with Chelsea.