Chelsea owner Roman Abramovich has demanded Diego Costa and Antonio Conte settle their rift.
The Daily Mail says Costa and Conte fell out when the Chelsea manager sided with a member of his medical staff over a back complaint from the striker.
Costa's representatives have been trying to drum up interest in a move to China but that is unlikely with no formal offer on the table and Chinese authorities closing the door on foreign signings.
Clubs were allowed three foreign players and one non-Chinese Asian but the quota is changing to just three foreigners in a bid to stem the flow of expensive imports.
Costa, whose Chelsea contract expires in 2020, missed the 3-0 win at Leicester after training alone for most of last week.