That's very possible. Chelsea have been on the rise since last season and their performance has slowly improved since Maresca took over. Many positive changes have occurred, and their success in winning the Club World Cup is a result of the process.
So, it's highly likely that Chelsea will be even better next season and can compete fiercely for the Premier League title. Although it won't be easy, they have a chance.
Besides having a chance, Chelsea will also be a team to be wary of by several strong Premier League teams next season. I'm quite impressed with Chelsea's ability to create a smooth, yet dangerous game for all opponents. This could be their main weapon next season, especially in establishing themselves as a title contender in the Premier League, although it won't be easy, as the Premier League also requires high consistency for a team to win the title. But I truly believe Chelsea can do well next season, as they simply need to be more consistent in achieving good results in every match.