Chelsea are expected to improve with Pochettino, but I believe he will not be able to win titles for Chelsea in one season. Qualification for the Champions League and European competition next season is the most likely wish, but I don't expect him to be able to rival Pep Guardiola at Manchester City.
Pochettino is capable of rivalry Pep Guardiola Manchester city, the Manchester city squad mightn't be as strong as they were last season because there are transfer rumours of some players especially those not getting enough playing time wanting to leave the club and when that happens, the quality of the team will drop because now they won't be having competition to play better so they can be chosen ahead of the other players. Chelsea are capable of winning the premier league next season. It just takes few right signings for that to happen and I believe Pochettino with the backing of Todd Boehly can get that to happen.
How can you say Chelsea won't be able to win a title next season when they have breaks from all European competition and only focusing on domestic competition. We have about three of those to play which are the FA cup, the League trophy and carabao cup. While others teams will be busy playing all three competition and some playing European games, Chelsea players will be resting and you think we can't get one trophy if the managers does his job very well. Remember Chelsea are known for giving managers trophy and I think it is only Graham Potter that didn't leave Chelsea with any trophy in the last couple of years. Pochettino will be winning a trophy with Chelsea next season.