Chelsea may need to overhaul their defence.
That is according to former Arsenal star-turned-pundit Martin Keown.
Branislav Ivanovic was dropped after the Arsenal game a fortnight ago in which the Blues lost 3-0.
Antonio Conte reverted to a back three, deploying Gary Cahill, Cesar Azpilicueta and David Luiz in defence.
Recent reports have suggested that the west London outfit could improve their backline when the January transfer window opens.
Learn what Keown said on next page.