Pochettino is an excellent coach anf I feel this time with him Chelsea will surely be a great team again, Pochettino has good strategy and with his experience I believe things will well for Chelsea. Chelsea performance have been very so poor for a longtime and the players too will try their best to put much effort in their games to get victory.
This is my reason I feel things will be different for Chelsea this season because they only have the English Premier league to just compete in, they will be more focus with their Premier league games. If their is no change in Chelsea's performance that means the problem of Chelsea is not just a problem or coach.
Too much hope for Pochettino when he's not yet proving anything for Chelsea or other clubs he had managed, there are no difference between Pochettino and Potter based on their past experience.
Only playing for one league don't make Chelsea would have a good performance, it's just matter of the coach who's can manage the club and know the limit of his players. The thing is if Chelsea performance is still bad, the problem is from the players, but unfortunately their veteran players have joined other clubs and there's no way for Pochettino or new coach to get back all of their veteran players.