Manchester City, along with United, are the two early favourites for the Premier League title given the money they have spent on strengthening their squads so far this summer.
Manchester United have made waves in the transfer market in recent years, splashing millions of pounds to get them back to the top in the post-Sir Alex Ferguson era.
The Red Devils won the Europa League and EFL Cup in Mourinho's first campaign at the club but will be desperate to improve their domestic form this term.
Next season the Portuguese manager is likely to stick with a 4-3-3 formation to accommodate his new attacking stars and maintain a stable midfield. They have to deliver and kill teams off. Ander Herrera sits in front of him as the engine in midfield, with Pogba given more of a free role to roam forward.
Has Mourinho got United ready?United missed out on Europe the previous two seasons.
That move has now been made, with Pogba pleased to see his efforts pay off and a proven goalscorer join him in the pursuit of Premier League title honours. They then played three matches in the International Champions Cup, which included a 2-0 victory over Manchester City, a 1-1 draw with Real Madrid and a 1-0 defeat to Barcelona, before beating Valerenga 3-0 and then Sampdoria 2-1.
Former Man United striker Dwight Yorke has backed Romelu Lukaku to be a big hit at Old Trafford this season, but has hinted that Mourinho's team is not good enough to win the Champions League.
Having suffered defeat in Macedonia, Mourinho is now switching his attention to his side's season opener against West Ham on Sunday.