Recently I heard a news said that Zlatan Ibrahimovic shirt sales has given Man United profit £76 millions 
The best part is. it just happened for one week, well thats very amazing imo. So, Man United just need ~£30 millions more to sign Pogba, or it would be better if the money used to buy few good players instead of the Frenchman.
They have sell £76M worth of shirt , they didn't get the full profit , but still there gonna be a lot of profit in just ONE week. That's exactly why sometimes a club spend a lot money on player.They not just buying the player talent, they are actually buy the player popularity too. No doubt Paul Pogba are really famous for many football fans , imagine how many kids will buy his Manchester United shirt. Really smart business from Mourinho , this is how special he is. The best part is. it just happened for one week, well thats very amazing imo. So, Man United just need ~£30 millions more to sign Pogba, or it would be better if the money used to buy few good players instead of the Frenchman. -snip-
Picture source : Bleacher Report UK facebook