But his agent, Cees van Nieuwenhuizen, has played down speculation that he has already been approached.
“That’s absolutely not right,” he told BBC Radio Five Live.
“Each day I’m surprised when I read comments in the newspapers in Russia, or in Italy with Juventus, or in England with Manchester City before and now Liverpool.
“It would be fair to say because it’s one of the big names in global football. But if Liverpool have a problem today or tomorrow then Guus is not available.
“Guus is not available for any club until August 1.”
The Dutchman’s close connections with Stamford Bridge – where he won the FA Cup last season – could play a role in deciding which job he takes up next.
Van Nieuwenhuizen said: “As Guus said after he left Chelsea, he enjoyed every second of being in the Premier League with Chelsea.
“He still has a very strong relationship with Mr Abramovich from Chelsea.
“If he would consider a return to the Premier League I think one of the first things he would do is give a call to his friend Abramovich and say, ‘I hope you don’t mind if I join club A, B, C or whatever’.
“In a way it’s a funny situation but on the other hand Guus is also very close with some of the people on the technical staff at Chelsea like Ancelotti, who he knows very, very well, and also Frank Arnesen, with whom he worked for a couple of years at PSV Eindhoven.
“So Guus doesn’t want to interfere with the current success story that Chelsea has picked up again under Ancelotti.”