Branislav Ivanovic's agent expects the defender to stay at Chelsea despite attracting interest from Real Madrid.
Real are understood to have identified the 25-year-old as one of their transfer targets for the January window after losing centre-back Pepe to injury.
Pepe is set to be sidelined for around six months with knee ligament damage and the Spanish giants are desperate to bring in reinforcements.
However, Ivanovic has established himself as a key player at Stamford Bridge this season under Carlo Ancelotti.
The Serbian's versatility has proved useful and he has filled in admirably at right-back in place of the injured Jose Bosingwa.
Ivanovic's representative Vlado Borozan believes it would be hard for Real to prise him away from the London club.
"The interest of Real Madrid is true, but I don't think the Blues are willing to sell him at this moment," Borozan told calciomercato.it.
"Ancelotti has admired him since he was Milan's coach, and now Ivanovic is part of his plans of Chelsea, it seems very difficult that Real can take him."