4 Reasons Mourinho has struggled at Manchester United

#1 The formation and starting line-up

Manchester United v BSC Young Boys - UEFA Champions League Group H

A characteristic feature of Jose Mourinho teams is a settled line-up, which practically remains unchanged throughout his stay in a club. The Portuguese even termed many of his players as "untouchables", as they were the first names on his team sheet. Some even blamed this habit of his for the poor form his teams generally showed in the latter seasons. However, with the various issues Mourinho has in his team, he has not been able to settle on to a stable line-up at the club.

His favoured 4-2-3-1 formation caused a lot of defensive issues last season due to Pogba's forward forays, and attempts of playing him in the number 10 role also didn't work out. This has forced him to adopt a 4-3-3 system for most games, and at times even a 3-4-3 or 3-5-2.

With the Old Trafford faithful witnessing different starting line-ups almost every other week, it is obvious Mourinho is still slightly uncomfortable with the squad at his disposal. The lack of untouchables in this Manchester United squad is a telltale sign that things haven't gone according to his plans so far.