Borussia Dortmund have issued a 'hands-off' warning over Manchester United-linked Shinji Kagawa.
Reports in the Japanese media have suggested United boss Sir Alex Ferguson is planning to send scouts to follow the 22-year-old's progress.
But Borussia insist the Japanese winger, who has been on the sidelines with a broken foot, will remain with the German champions.
Kagawa is under contract at Dortmund until June 2013 and general manager Michael Zorc says the Ruhr Valley club are eager to extend his current deal.
Zorc said: "It's not a topic for us, Kagawa is not for sale.
"Our ambition is to extend Shinji's contract early. When he returns from his holidays, we will discuss everything with him in peace."