#1 The Special One's tactical awareness

In Jose Mourinho, Manchester United have a manager who cannot be underestimated before any anticipated or important fixture.
The importance of three points in the clash only underline the aforesaid fact. Mourinho has proved his genius from the drawing board repeatedly since taking the job at Old Trafford.
He has shackled the likes of Eden Hazard and Christian Eriksen in the past which has eventually deprived their teams' of all the creativity. Jose's abilities need absolutely no introduction. The Portuguese manager has fine tactical prowess.
Liverpool may have a swashbuckling attack in the form of Sadio Mane, Roberto Firmino, and Mohamed Salah. However, Klopp's beautiful idea of the game would severely take a hit at the weekend when he faces an organised United side.
It would take more than just flair for the Reds to break down this Mourinho side.