AVB dropped the bombshell last night.
He said: "It might not be the player's expectancy to renew.
"Nico as a person is very, very happy, he belongs to Chelsea in the last year of his contract, performing.
"We will make our efforts for him to renew but Nico has his own decision to make and I am not sure he will be willing."
Pressed on whether the player had indicated he wanted to leave, Villas-Boas replied: "Yes."