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Hopefully Pochettino can become a coach who can bring back trophies for Chelsea in the coming seasons. Basically I think he will need time to rebuild Chelsea with new players or the new squad they have fixed in this transfer window. Chelsea must get stronger next season with Pochettino and to be an attraction for top European players to join them.
This is everyone's hope, especially Chelsea itself. At least, Chelsea can adapt quickly to the new coach and the players, both new and old. So that at least they can improve their performance very well and become top clubs again in the EPL, and enter the UCL in the following season. Last season was a very bad season and this is really embarrassing for Chelsea. So they certainly have high hopes for Pochettino for that. And according to the tactics and type of training he has, the hope is that Pochettino is indeed the best for Chelsea at the moment.