Chelsea's biggest mistake this season was sacking manager Thomas Tuchel in September. The second was appointing Graham Potter to replace the Champions League-winning coach at Stamford Bridge.
There have been plenty of other bad choices along the way by the club's new owners -- a consortium led by Los Angeles Dodgers part-owner Todd Boehly. Spending £47.5 million to sign a declining Raheem Sterling from Manchester City, then recruiting £10m striker Pierre-Emerick Aubameyang from Barcelona on Tuchel's recommendation, six days before firing the coach, are other rash decisions which have done little to help the team.