Casemiro led Manchester United to their first trophy in six years at Wembley last season - but in the 14 months since, the Brazilian has reflected the problem in Erik ten Hag’s sideRead More »
Blues could lose their key man to illness ahead of London derby
Everything you need to know about the Premier League fixture
Mikel Arteta’s use of two former Blues players in Kai Havertz and Jorginho has helped open up a chasm between the two clubs