The manager had to beat off competition from other top clubs to land his man ahead of the 2011/12 campaign, with both Liverpool and Arsenal reportedly keen on one of England's brightest talents, but the youngster was determined to join the champions.
With United's defence beset by sweeping injury misfortune at different stages of 11/12, Jones was able to put in a number of accomplished displays at centre-half and right-back, while occasionally lending his talents to a moonlighting role in central midfield.
The Reds' defensive injury curse claimed Jones at various points in his debut campaign, and also robbed him of
almost half a season in 2012/13. The youngster didn't appear in the first team until midway through the campaign due to back and knee injuries, and subsequently suffered ankle damage after a typically whole-hearted challenge against Reading's Jobi McAnuff.
Jones' displays when selected, however, were promising enough to prompt Sir Alex to talk up his brimming potential and, while his long-term position has yet to be determined, his skill and application in any capacity will serve United well in the interim.