The struggling midfielder started against Liverpool but it was an afternoon to forget as his team lost 3-1.
Once a Premier League winner with Leicester, his career has taken a nose dive since he left the King Power in 2017.
He was linked with several moves away from Stamford Bridge this summer but none of them materialised, leaving him stranded in West London.
Chelsea were beaten by the Reds' three quickfire first half goals.
A late spot kick from Bryan Fiabema gave the Blues a consolation but it was a case of too little too late.