I also think that Chelsea will still find it quite difficult to reach the top four next season with the current squad condition, but on the other hand I also don't think Chelsea will fight to avoid relegation because Chelsea will definitely be able to save themselves in the middle of the table like in the top ten or below next season. In addition, the Premier League which is still known for its strong competition from every opponent can also benefit a team like Chelsea because after all Chelsea is not the worst team in the Premier League.
It's hard to say what Chelsea are capable of with Maresca until the season starts, but I don't see how they can fight for the Champions League zone. The team has progressed with Pochettino, and if he had stayed as coach, I would have expected Chelsea to be able to do it, but Maresca is changing everything at his own discretion again and I can't imagine what Chelsea can be like, but for now I find it hard to believe that they will be able to fight with the teams from the top of the table.
It seems like there is nothing wrong with the Chelsea squad which is made up of mostly young players and of course they will just need time to develop, currently a lot of criticism continues to attack Maresca after Chelsea poor performance in several friendly matches, I think what happened to Maresca and Chelsea is currently still very reasonable, because however the majority of players currently owned by Chelsea are almost all new players who were brought in during the summer transfer market, so Maresca still really needs time to make them into a unit that has chemistry between players in club at this time, next season maybe we won't see Chelsea in the top 4 but I'm quite sure they will still be able to stay in the top 10, the journey to see Chelsea develop will still take a lot of time so it's best for the fans to remain patient in supporting the real Chelsea has started a new era with a young squad.