It is quite staggering that when Chelsea last won at Old Trafford, Sir Alex Ferguson was still in the Manchester United dugout, Frank Lampard had not become the club's highest goalscorer, and Yossi Benayoun was in the matchday squad.
Given the history of both clubs in the nine years since, Chelsea has found winning at United an insurmountable hurdle even when heavy favourites during the two title-winning seasons in 2014/15 and 2016/17. Although United may appear a mess structurally and woefully out of form, when you widen the Blues' Premier League form home and away against their next opponent, it increases concern.
The last league win came in November 2017 at Stamford Bridge with a rare Alvaro Morata winner. To express how much has happened since then, the two coaches on the touchline that day, Antonio Conte and Jose Mourinho, have gone on to manage Spurs.
