It will be sad if Chelsea falls below the Premier League. Is it really possible? I can't even imagine it.
It is possible that Chelsea lose the remaining 5/5 match of the season, but I don't believe that has really happened to them this season. I know the competition for Chelsea is over, especially for the Premier League title, the Champions League zone and the Europa League zone. So Chelsea is just focused on surviving in the Premier League and as soon as possible to get a coach who is commensurate with the team's big name.
Chelsea can probably win their last 2/5 match for this season, so my assumption about that possibility is that they only lose to Manchester City, Manchester United and Newcastle United. Meanwhile Chelsea can be expected to win against Bournemouth and Nottingham.