Haris harassment?

According to today's Mail, we could be bracing ourselves for an approach for midfielder Haris Vuckic. The 17-year-old Slovenian has only featured three times for the first team but clearly rates himself quite highly if those yellow boots are anything to go by - and it seems he's not alone. Still, looking at the first line of the Mail's story has left me puzzled as to the identity of his alleged pursuers - who are "Manchester Untied", exactly?