Chelsea's New coach, Mauricio Pochettino, was once a Premier League coach, and from his record, he performed well with the time he spent, and he is a recognized coach in the world as well, so seeing him as Chelsea's new coach, I am happy, and I believe he will perform well and take Chelsea back to its normal standard in the Premier League. So I am fully expecting Chelsea's performance to be strong next season.
He was manager of Spurs, but he didn't win anything in all his time there, his best achievement was a CL final that they lost, thus i don't know if i can say he performed well at Spurs, but one thing he was able to do was to play attractive football that was very pleasing to watch. Having said that, Chelsea is a bigger team than Spurs with obviously a bigger budget, thus he might achieve his long awaited success in Stamford Bridge.
Although Pochettino did not get any trophies and titles at Tottenham but I am sure that does not mean Pochettino is bad, because after all Pochettino also at least always managed to make Tottenham consistent to compete in the upper zone in the English Premier League standings. Therefore, then of course if Pochettino is in a team that is bigger from many aspects when comparing Tottenham and Chelsea, then I believe that Pochettino has a good chance to be able to provide a more stable performance for Chelsea. Although indeed, if we consider winning the English Premier League title and trophy, of course it will never be easy. But yes, of course anything can still happen and over time I am sure Pochettino can still provide good results at Chelsea.