#3 Real Madrid
If someone in the whole wide world has a fetish for signing a "Galactico" then it certainly has to be Florentino Perez. The Godfather of Club Football has certainly had quite the summer as Real Madrid let go of their all-time leading goalscorer in Cristiano Ronaldo while bringing none of the big names to replace their talisman.
Although Madrid has a lot of talent in the center midfield, no one has the type of hype and aura around them that Pogba has. Perez certainly loves these sort of flamboyant players and will not miss a chance to sign United's midfielder should an opportunity present itself.
He can very well offer Toni Kroos or Raphael Varane (both players actively courted by Mourinho) as make-shift weights in the deal to placate United's supporters. This deal may also bring in a return to the old amicable relationship between the two clubs after a bitter blame game over a faulty fax machine which prevented United's Number 1 - De Gea - from joining Real Madrid.
Though Madrid can very well do without another world-class midfielder, their club president will certainly not leave an opportunity to bring in the highly popular midfielder and will go to any length if Lopetegui's first season does not go according to plan.