Ajax have told Chelsea it will take £20 million to sign fullback Gregory van der Wiel.
The Blues are among those interested in the Dutch international full-back, who was close to a move to Bayern Munich before talks broke down.
Carlo Ancelotti, also tracking Benfica's David Luiz, is intent on bolstering his defence for the new season.
But Van Der Wiel, 22, a player Ajax are willing to sell, will clearly cost him big bucks.
Ajax boss Martin Jol has been told players must leave if he wants to buy this summer.
