Rovers raised concerns over the chants.
Chelsea want to push ahead with a deal for Pierre-Emerick Aubameyang as a stop-gap solution before looking at long-term targets next summer including RB Leipzig forward Christopher Nkunku.
Mike Dean has admitted that he was wrong not to advise referee Anthony Taylor to look at Cristian Romeroâs hair pull on Marc Cucurella during Sundayâs bad-tempered London derby between Tottenham Hotspur and Chelsea.