The rumoured United target has been with Schalke since he was 4-years-old but has confirmed that he will not be signing another contract with his boyhood club.
Bayern Munich are the likely destination, although their fans have shown their displeasure over the potential signing.
Schalke are Germany’s second-best supported club after Bayern Munich with 90,000 members. Their ground, Veltins-Arena, has a 61,000 capacity and the average attendance has not dropped below 60,000 since moving there ten years ago.
There were fans inside the ground protesting as well, with “do not go to Munich” and “you were a legend” signs.
They lost the home game against lower placed Kaiserslautern 1-0 and are now 10th out of 18 in the league.