Chelsea will ask Fifa to investigate an alleged illegal approach from Real Madrid for Dutch winger Arjen Robben.
Robben endured a difficult second season at Chelsea
The 22-year-old has been heavily linked with a move to the Spanish giants and new Real president Ramon Calderon has admitted his interest in Robben.
But Chelsea chief executive Peter Kenyon said: "We note that Mr Calderon confirms Real Madrid spoke to Arjen.
"As a result Chelsea will be writing to Fifa to ask them to investigate an illegal approach by Real Madrid."
We have been in touch with Robben and it seems the player wants to come here
New Real Madrid president Ramon Calderon
He added: "The Arjen Robben situation could not be any clearer.
''There have been no meetings or conversations between the Real Madrid sporting director Predrag Mijatovic with any Chelsea officials, anyone mandated to act on Chelsea's behalf or owner Roman Abramovich about Arjen's future.
"Any indication that a transfer is possible is completely untrue. We will not be entertaining any offers for Arjen, he is not for sale."
Calderon had earlier confirmed Mijatovic had spent time with Abramovich and was convinced he could complete a deal for Robben.
He said: "Mijatovic has been at a match in Germany with Abramovich and in theory Mijatovic told us we can reach an agreement.
"We have been in touch with the player and it seems everything will be okay and that the player wants to come here."