It has taken less than two weeks for the optimism generated by a 12-match unbeaten start to Maurizio Sarri's reign at Stamford Bridge to fizzle out and this weekend the Italian faces his biggest test to date when Manchester City visit.

FILE PHOTO: Soccer Football - Premier League - Chelsea v Fulham - Stamford Bridge, London, Britain - December 2, 2018 Chelsea manager Maurizio Sarri reacts during the match REUTERS/Eddie Keogh