I am very curious about Chelsea's performance in the PL, because in the Club World Cup they beat the best team in Europe, which none of the best teams could beat, these are the things that make the Chelsea fans dream, Chelsea is a team that showed that with good Study they can beat any team, that is already more than proven.
Next season will be an entire new season to all teams not just Chelsea, we will witness one of the most interesting Premier League season of all time because all the teams are well prepared for next season by signing quality players to make the team complete.
Chelsea on the other hand is well prepared, and the effect has started from the FIFA Club World Cup, and I think they can also do well in the premier league since they have quality squad and has improve their squad depth towards next season.