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,

Estevao ended up starting for the Blues, but after just five minutes, he made a mistake which gifted possession to West Ham. Lucas Paqueta got on the ball and scored an absolute screamer to give his side the lead, and that could’ve given the Hammers real belief.