Branislav Ivanovic is reportedly in advanced talks with Zenit St Petersburg about a transfer to Russia.
The Serbian has fallen out of favour with Chelsea boss Antonio Conte and has been told he can leave during the January transfer window.
Conte confirmed the defender was in negotiations but was reluctant to give much detail.
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“I haven’t spoken with [Ivanovic] about his decision. He is talking with another club, until now I don’t know," he said.
"It is better to ask the player."
Jurgen Klopp is ready to rush Sadio Mane straight back into Liverpool action against Chelsea despite the player arriving in England tomorrow morning.
Branislav Ivanovic has been at Chelsea since 2008
A private jet was sent to collect the Senegal international but a problem meant the flight will have to be diverted via Italy.
“I spoke to him, it's all good so far, of course he will be in tomorrow morning, and we will have to make a decision – look into his eyes and see what is possible with him, and make a decision,” Klopp explained.
“I don't know exactly what involvement he will have. Ray, our team manager, did an outstanding job to bring him back as soon as possible, he's now on his way. That's good."
Craig Gordan is a target for Chelsea
Chelsea have made an increased second bid for Celtic goalkeeper Craig Gordon.
With Asmir Begovic close to leaving, Conte is keen to replace him with an experienced back-up.
According to the Evening Standard, Gordon is interested in joining the Premier League leaders and Celtic boss Brendan Rodgers has softened his stance over the sale of the goalkeeper.
Paris Saint-Germain goalkeeper Salvatore Sirigu is said to be another option if the Gordon deal fails.