Thomas Tuchel was sacked as Chelsea manager at the start of September as Todd Boehly decided to replace him with Graham Potter.
The German manager won the UEFA Champions League, UEFA Super Cup and FIFA Club World Cup with the Blues during his 17 months at Stamford Bridge. Tuchel dealt with a number of problems throughout his tenure, most notably when Chelsea were sanctioned by the UK Government which led to the arrival of Boehly and the Clearlake consortium, completing a £4billion takeover of the west London outfit.
It's said that Tuchel was not happy with the 'extra responsibility' and 'more power' given to him in the summer transfer window, with the German passing up the chance to sign Cristiano Ronaldo from Manchester United which contributed to Boehly's decision to sack him following a poor start to the new season. The Telegraph added that the departure of former technical and performance advisor Petr Cech upset him.