India, Aug. 23 -- Chelsea playmaker Cole Palmer was ruled out of the Premier League clash vs West Ham on Friday. The 23-year-old was injured in the warm-up, the team confirmed. He was seen walking down the tunnel at the Olympic Stadium after leaving the warm-up early.

Instead of Palmer, offseason signing Estevao made his full debut for Chelsea. The Brazilian had come on as a substitute in the 0-0 draw against Crystal Palace last weekend.

Chelsea manager Enzo Maresca told Sky Sports that Palmer 'felt something' during warm-ups, without getting into specifics. He, however, reiterated that his withdrawal was 'precautionary to avoid taking any unnecessary risks'.

His absence is a major concern for the Blues, who are still looking for their...