Chelsea are reportedly 'working closely' with the Professional Footballers' Association (PFA) over their treatment of Axel Disasi and Raheem Sterling.
The two stars, who the Blues splashed out a combined £85million on, have been frozen out of manager Enzo Maresca's squad after failing to secure moves away from the club this summer.
Having endured a disappointing loan spell at Arsenal last term, Sterling is believed to have turned down advances from both Napoli and Bayern Munich during the transfer window, with the Englishman unwilling to move away from his native London.