#1 Samuel Umtiti (Barcelona)
The French defender has shot into fame following his move to Barcelona. With the departure of Javier Mascherano, Umtiti has made the centre-back position at Barcelona his own, alongside Gerard Pique. A physical and aggressive player, Umtiti is exactly the type of no-nonsense defender Mourinho craves for.
Bought from Lyon in 2016 for a fee of €25 million, he has been performing consistently well for Barcelona and has been called up to the French squad too.
He is all set to lead the national team's defence in the 2018 FIFA World Cup this summer. The 24-year-old's contract runs out in 2021 and Barcelona are desperate to tie him down to a new deal before the beginning of the World Cup.
There have been strong rumours that United are ready to trigger his £53 million release clause and double his wages. His friendship with international teammates Paul Pogba and Anthony Martial may also help United in the pursuit of his signature. He would be a brilliant signing for United and would add some much-needed steel to their back-line.