I think Chelsea has learned a lot from their mistakes which in this season consist of sacking quite some coaches and as such Pochettino to have the full trust of complete Chelsea management and board of directors.It is only natural for a coach to sell players which are not in his plan,meaning they will not fit in the scheme of how he will play and I am sure that Pochettino is knowledgeable enough to get the players he wants and also keep quite some of the good players from Chelsea to build a team that is capable of bringing good results for the fans.He did well in Tottenham so I only expect him to do better with Chelsea and I don't know the odd but I would even bet on Chelsea to win next season,just for fun,just 50 or 100 bucks.
to be honest, I'm not so sure about Pochettino whether he is able to provide consistency to his players and if I see it looks like Pochettino is looking for a mainstay striker but not sure who he will choose as a mainstay striker. but nevertheless I appreciate whatever Pochettino is doing to improve Chelsea's performance again after being knocked out last season which was very sad for Chelsea.
btw, you seem too sure of betting for Chelsea whereas we don't know if all Chelsea players can quickly adapt to the new coach and I suggest that you should at least see the first performance that Chelsea will show.