Chelsea sweating on fitness of Cole Palmer for Arsenal showdown

Cole Palmer is a doubt for Chelsea’s Premier League game against Arsenal on Sunday after limping out of Old Trafford at the weekend with a knee injury.

Head coach Enzo Maresca called the challenge from Manchester United defender Lisandro Martinez on the 22-year-old during Sunday’s 1-1 draw “not a normal one,” and admitted there is a risk the England international will miss the London derby.

Palmer has not trained since the incident, which occurred in stoppage time and earned Martinez a yellow card...