A good coach cannot fix the problem of Chelsea in just a season and I don't know why the management cannot just understand that.
Chelsea wants quick changes in their performance, they want a coach that will be able to fix their problem in just a season, which will be really difficult for them to get. If they want their performance to improve, then it’s going to be over some period of time and won’t be just a season. I will say Pochettino was getting everything right for Chelsea before he was sacked. Let’s just imagine that pochettino stays in Chelsea for like one more season. We will see great changes in Chelsea’s performance, but they decided to sack him, and they think the new coach will change everything within just a season. Even Chelsea fans are not happy with Pochettino being sacked because they are beginning to see changes in Chelsea's performance.
What if the new coach is unable to revive Chelsea will he get sacked at the end of next season
If they can sack Pochettino, then what do you expect? He will also be sacked. If Chelsea is not able to have patience with Pochettino, then any of their coaches who perform poorly within a season will also be sacked.