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.