The 18-year-old is widely regarded as the Premier League’s best young full-back thanks to his impressive displays with the Saints over the last two seasons, while he recently earned his first England cap in a friendly against Denmark.
Both United and Chelsea are reportedly keen to land the youngster, although they could face stiff competition from Spanish giants Real Madrid, according to Sky Sports Italia journalist Gianluca di Marzio.
Los Blancos boss Carlo Ancelotti is believed to be in the market for a new left-back. The Italian coach has lost faith in Spain international Alvaro Arbeloa, while Fabio Coentrao is expected to leave the Bernabeu at the end of the season.
As well as Shaw, it’s also been reported that Real Madrid are keen on Mattia De Sciglio and Alberto Moreno of AC Milan and Sevilla, respectively. However, if Shaw fights his way into Roy Hodgson’s 23-man England squad for the 2014 World Cup finals and impresses in Brazil, Southampton will have a difficult job retaining his services.
It’s well-known that Shaw is a boyhood Chelsea fan; however, he may be deterred from moving to Stamford Bridge this summer as a result of the excellent form of Cesar Azpilicueta, who is a Mourinho favourite.
Real Madrid, meanwhile, already have the Brazil international Marcelo in their ranks. But Manchester United, on the other hand, are desperately seeking a long-term replacement for Patrice Evra, who could leave Old Trafford on a free transfer at the end of the season.