Perez considers challenging Real Madrid president Calderon

Florentino Perez is weighing up a new challenge to Ramon Calderon's Real Madrid presidency. Sport says Perez, angered by Calderon's failure in the transfer market, is seriously considering a return to the Real presidency for 2010.

Florentino Perez is weighing up a new challenge to Ramon Calderon's Real Madrid presidency.

Sport says Perez, angered by Calderon's failure in the transfer market, is seriously considering a return to the Real presidency for 2010.

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