According to Football Italia, United, Arsenal, Napoli and AC Milan are keeping tabs on the 22-year-old, however, there is a big hurdle that may put off these teams. The report states the striker has a release clause in his contract that is worth €40 million (£34.1m/$43.3m) but that is only available for his former club Bayern Munich. Moreover, if he is sold to a different team, the German side are reportedly granted a 40% cut of that transfer fee.