Chelsea Football Club rate Branislav Ivanovic at £20million.

The Serbian international has established himself as a key member of the Blues squad, ever since his £9.7million arrival from Lokomotiv Moscow in January 2008.

Ivanovic remains under contract at Stamford Bridge until the summer of 2016, but he has been linked with a move to Real Madrid when the window reopens.

Jose Mourinho is prepared to pay £15million to lure the 28-year-old to the Bernabeu, but The Sun claims the Londoners rate the defender at £20million.

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