Despite the striker seemingly nearing a loan move to AC Milan having traveled to the city for a medical, the Premier League side are still attempting a last-ditch effort to get his signature.
Chelsea believe that the Argentine forward is not fully satisfied with a loan deal even though there is an option to make it permanent at the end of the season.
Meanwhile, the Blues have been trying to offload Olivier Giroud to Marseille to raise funds to match Milan’s offer.