#2 Eden Hazard isn't the only player who needs to be kept quiet
Eden Hazard has been arguably the best player in the Premier League so far this campaign. The Belgian has already netted seven times in eight games for the Blues and will probably be the biggest threat this weekend.
Sarri-ball focuses on attacking heavily down the left, while the players on the right try to make an impact with fewer touches. The attacks will certainly run through Eden Hazard and the United right-back ( Young or Valencia) must make sure he doesn't let the Belgian do any damage. Since Morata and Giroud are yet to find their form up front, closing down Hazard could neutralize a massive goal threat for United.
The Chelsea no.10 is definitely the main threat that needs to be neutralized, but he isn't the only one; Chelsea's new midfield metronome Jorginho will be as much a thorn in United's side as Hazard.
The Brazilian has been impressive in a new-look Chelsea under Maurizio Sarri; he is the player who makes the Blues tick with his accurate and abundant passes all over the pitch.
With Herrera and Matic doubtful for the clash, Fellaini and Fred are almost certain to appear alongside Paul Pogba in the midfield. Fred will be tasked with a duty to disrupt Jorginho from setting the tempo for the Blues - one that he needs to carry out to perfection.
If Fred can win the midfield battle against his countryman, United will have a big chance of taking all 3 points back to Manchester.