Newcastle are one of a number of Premiership clubs interested in the highly-rated left-back, but if Man Utd cannot sway the Saints to part with their prize star, what chance has Glenn Roeder?
The Championship club are also thought to have turned down a £3million bid from Tottenham, according to The Sun.
The teenager only has 18 months left on his current deal and if he refuses to sign a new contract then the club may be forced to sell him this month or risk seeing his transfer value drop dramatically in the summer.