Question marks were raised about Antonio Rudiger’s future at the club following the 3-3 draw against West Brom at the weekend.
The German international has not been included in the matchday squad for the last three games in all competitions.
French champions Paris Saint-Germain, Spanish giants Barcelona and Premier League side West Ham are reportedly all interested in signing the Chelsea defender.
Chelsea boss Frank Lampard has refused to confirm whether the defender would be sold before the transfer window closes.
“I wouldn’t assume anything,” he said. “I will make no assumption.”