Chelsea have a string of attacking players unhappy with their treatment under Thomas Tuchel.
The German technician celebrated a year in charge at Stamford Bridge on Wednesday, having picked up the Best FIFA's Men's Coach Award for 2021 last week.
However, matters on the pitch this season have not been quite as rosy, with the victory over Tottenham on Sunday just their second win in eight in the Premier League.
A public questioning of Tuchel's tactics by striker Romelu Lukaku during a Sky Italia interview in December brought issues to a head, with the Belgian left out for one game before being brought back in.