Chelsea fans should not expect too much from Pochettino. I'm not saying Pochettino is a bad coach. But good enough. But he is not experienced enough to win Premier League or Champions League titles. PSG had a great squad. PSG had many star players. Even then, Pochettino could not dominate the Champions League. Even PSG's performance was not stable. However, coach Pochettino may be able to stabilize the Chelsea squad. But it is unlikely that Chelsea will win the title with Poch or that Pochettino will build a title-worthy Chelsea team. I think we will see Chelsea in the top 6 of the points table. The Chelsea team will not be able to qualify for the Champions League.
Even though it is very difficult to expect more from Chelsea now but at least for this first season Poche must be able to bring Chelsea to finish in a good position because if not then the dismissal like Todd did to Lampard and Potter will continue.
Indeed, he needs time to bring change but at the moment it seems Chelsea don't really expect a long time because finishing in 12th place last season was a big blow for them so inevitably they have to improve now.
Even though the top 4 with their current condition is very difficult but they must still do their best so that their position is much better than last season.