Mauricio Pochettino has shown that he has all it takes to bring Chelsea back to their best and I'm very happy to see that happen. Despite the fact that a lot of Chelsea players who were part of the squad last season left the club, Chelsea are now playing more like a team than they did they whole of last season.
Though it's still preseason games which aren't seriously contested matches but looking at the current Chelsea style of play, one can say that they'll be a threat to other English Premier League clubs next season

Currently, Chelsea is the only team that has never lost a pre-season match and everything went smoothly when Pocettino managed to change this squad for the better. I think this is the first time Chelsea have really chosen the right coach and compared to last season there is a clear difference. Pochettino managed to prove his capacity to be able to manage a big team and get the club's goal back to be able to compete with other strong teams next season. I can't wait to see Chelsea with the style of play they have shown in pre-season and at least I don't have to hesitate anymore when I want to bet on Chelsea's victory.
I can't say anything about Chelsea unless we start the next season and wait for some weeks because this changed many players and they are now using a coach which means they can change and get better form in the weeks after they have more friendly games and play some matches in the next season however Pochettino's performance in these friendly match are amazing we can even expect to see Chelsea getting back in the top of the league and race with other teams for the title.