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Mario Melchiot has expressed his surprise at reports Chelsea are willing to sell Nemanja Matic to Manchester United.
Matic was a key part of Antonio Conte's side last season as they clinched the Premier League title, but it is understood he is closing in on a £40million move to rivals United.
Speaking on the Alan Brazil Sports Breakfast, former Chelsea star Melchiot said letting the Serbian join a direct rival could came back to 'bite' the Blues.