Manchester United have been warned Marco Reus' buyout clause has been hiked up by Borussia Dortmund. The Daily Mail says United have been warned that David Moyes's main transfer target Reus will cost up to £40million.

Midfielder Reus had a £29.4m buy-out clause in his contract at Borussia Dortmund.

But it is understood the situation has changed since Bayern Munich activated a similar clause to snatch Mario Gotze last summer.

The Barclays Premier League champions will now have to break their transfer record to sign the 24-year-old.

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