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,

Chelsea attacker Cole Palmer has been the Blues’ star player since swapping the Etihad Stadium for Stamford Bridge two years ago. But the 23-year-old could become a victim of Chelsea ’s transfer policy, with the west London giants enjoying another productive summer in the transfer market.

Enzo Maresca has said Chelsea are waiting to discover the extent of Cole Palmer’s groin injury.Palmer pulled out of Friday’s 5-1 win over West Ham United after suffering discomfort in his