Radja Nainggolan claims Chelsea are keen to sign him from Serie A side Roma, and says both clubs have had contact.
The midfielder told Belgian magazine HLN Nina that new Blues boss Antonio Conte wants to secure his services, and not for the first time.
The 28-year-old said: "There has been contact between Roma and Chelsea. But I will not get involved so long as there is no agreement between the clubs.
"Chelsea are keen to strengthen their squad and Conte is a manager who wanted to sign me before. Chelsea are a big club.
"But the transfer is not a done deal and it would not be easy to leave Italy after 11 years."
It has also been reported that Chelsea may have to pay in excess of £30m to secure the signature of Nainggolan who could be offered a six-figure weekly salary and a five-year deal.
Conte will be taking over at Stamford Bridge following Euro 2016 where he will coach the Italian national team.