Chelsea may have to pay as much as £37 million in order to land Atletico Madrid full-back Filipe Luis, according to The Daily Star.
The defender, who is on Brazil's standby list for the up-coming World Cup, enjoyed a fine season in La Liga as he helped his club secure the title and reach the Champions League final.
And now it appears that Blues boss Jose Mourinho wants him to replace the departing Ashley Cole.
It remains to be seen as to whether Spanish authorities rule that the increase is met, however it appears that Atletico are reluctant to sell the 28-year-old anyway.
It appears that the Spanish champions are ready to offer the player a new deal to stay with the club, meaning Chelsea face a tough test in their quest to land Luis in the coming months.
If Chelsea are unable to replace Cole, then they will be left with Cesar Azpilicueta who is predominantly a right-sided defender.
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