Chelsea's problem isn't just with the manager; some of their players also have weaknesses, so Chelsea must address these if they want to challenge for the Premier League title next season. However, in the near future, Chelsea must focus on winning the Club World Cup, as the opponents they face are quite formidable. Chelsea will need to significantly improve their strengths for the final. Therefore, the current manager must prioritize this, as it is a crucial final for them to win before they can enter the Premier League next season.
It will always be difficult to predict the champions next season. Everyone will work hard and improve the team to get the best squad. But the league is a long game and very different from competitions like the club world cup. In the past few years they have been in a period of change, in fact I saw how they struggled just like Man United. This season they have made improvements Chelsea are even able to finish in the top 5 and ready to compete in Europe. That means they need a process and it's not easy. Currently they have a very fat squad, it is advantageous if Maresca does need them. Karen Maresca is able to have many rotation alternatives for a long competition.