Chelsea boss Enzo Maresca has revealed that talisman Cole Palmer had a groin problem as the Blues warmed up to face West Ham United in the derby yesterday.Maresca also revealed that the Chelsea no.

Maresca said Chelsea's star hasn't been fully fit this week and the team decided not to risk him after a blip during warm-ups."In the last 4-5 days he was not 100 percent and tonight during the warm-up he again felt something,

Nicolas Jackson has been deemed surplus to requirements at Chelsea by Enzo Maresca, but Premier League pundit Paul Merson believes the Blues boss is making a mistake letting the striker go