The 24-year-old made his first appearance in a Man United after a ten month absence against Swansea City back in early November.
Since then, Jones has been a crucial element of Mourinho’s starting XI, making seven appearances and impressing many with his brutish, direct style.
Neville, in his column for the BBC, noted Jones has quickly morphed into a mainstay at the back for United.
“Injuries meant he did not play for United’s first team from 2 January until the start of November and, in that time, they signed Eric Bailly, and also used Daley Blind, Chris Smalling and Marcos Rojo at centre-back.
“I was left wondering where Jones would fit into Jose Mourinho‘s plans when he returned to fitness.
“His ability and potential were not in doubt but his problem was the same as it often has been since he joined United aged 19 in 2011 – a lack of consistency, either in staying fit or in playing in one position for a sustained period.
“Jones was at the point in his career where he had to play, and deliver. So far, he is doing both.
“The time to assess him fully on that will be at the end of the season but, since coming back into the team, he has been in absolutely unbelievable form.
“What we are seeing now are the benefits of him being given the same role in the centre of defence and, over the past seven games, he has proved that he has the ability to become United’s number one centre-back.”
With Eric Bailly, Chris Smalling, Daley Blind and even Marcos Rojo ahead of Jones in the pecking order under Mourinho, it was largely thought that Jones would spend another season in relative anonymity at Old Trafford.
But to the surprise of many, the Englishman has emphatically established himself this season, taking full advantage of injuries to Smalling and Bailly with a series of robust, reliable performances alongside Rojo.
The shellshocked, injury-prone liability has suddenly turned into a fundamental component at the back under Mourinho, who now faces a tricky decision with the imminent return of Bailly: does he leave the Ivorian out, allowing for Jones and Rojo to continue their promising partnership? Or does he reintroduce Bailly and in turn drop either Jones or Rojo, despite their brilliance in recent weeks?