Chelsea have been dealt a fresh injury blow after captain Reece James withdrew from the England squad with a knock sustained against Liverpool.
Bayern Munich have reportedly already decided to pursue a permanent deal for on loan Chelsea and Senegal striker Nicolas Jackson.
Chelsea's preparations for Saturday's meeting with Premier League leaders Liverpool have been dealt another blow after Enzo Maresca confirmed that midfielder Andrey Santos is injured.
Chelsea secured a crucial 1-0 victory against Jose Mourinho's Benfica at Stamford Bridge, thanks to an 18th-minute own goal by defender Richard Rios.
Chelsea's teenage winger Estevao Willian is quickly becoming one of the most talked-about young players at Stamford Bridge, despite only arriving in July.
Chelsea are awaiting the outcome of an investigation into Moises Caicedo's clash with Brighton defender Jan Paul van Hecke during their 3–1 Premier League loss on Saturday.