I don't think Chelsea will be strong enough to contend for the league title and compete with the other top teams, Pochettino will start a process of rebuilding the team to become formidable thus I don't think the squad will be strong next season, meanwhile Arsenal having known their weak areas and points in their squad last season had strengthened their midfield and signed a new defender Timber obviously the team is now solid and will continue from they where they stopped last season, Man City, Liverpool, Man Utd and Tottenham are other clubs that had strengthened their squad too thus makes next season to be one of the toughest season and I am very sure other mid table clubs will also up their game as well.
Yes, it is indeed quite difficult for Chelsea to be able to compete with big clubs in the Premier League next season, considering the problems that are currently facing the club. I don't really expect Chelsea to give a significant performance but being able to compete in 1st - 6th place is already very good for a club that is in a very low state. But on the other hand I believe that Pochettino will be able to make the Blues recover even though they need a lot of time. Arsenal have carried out several massive maneuvers because we know that it is impossible for Arteta to let the trophy next season fall into the hands of Manchester City and also Manchester United, Liverpool will always be behind them and it is clear that next season's Premier League will be a fierce competition.