If Mourinho doesn't quit even after this match I think he should be fired. His time at Manchester United seems finished by a long time now with his results of the beginning of this season which shows everything for everyone who want to see.
If he continue to stay at Manchester United there is a big risk with the results he is getting that Manchester United can even risk to be relegated if nothing is done.
1-3 against West Ham and very poor play
Man United does not to many chances to score
There is conflict between Mourinho and Pogba
It easy to say change coach.But changing coach during season is never good idea
Question is who will replace Mourinho.Zidane can be good choice because he has very good relation with players
1-0 Chelsea after 45 min I think final result will be drawn