Arsenal and Man United's great managerial divide

Manchester United’s 4-2 win at Watford on Tuesday night was probably the best I’ve seen them play this season.
They were purposeful and powerful, making the most of the abundance of pace and physicality in the team and, in the form they showed at Vicarage Road, the attacking trio of Romelu Lukaku, Anthony Martial and Jesse Lingard would be a test for any defence. Overall, this was a United team playing with a greater sense of freedom than we’re accustomed to seeing this season, and it was all the more impressive because they were up against a Watford side which has been doing so well.