Reece James was replaced by AC Milan midway through the second half.
Chelsea manager Graham Potter says Reece James will see a specialist about the knee injury he suffered in Tuesday’s Champions League game.
After jarring his knee in the turf while making a challenge, the right-back was replaced after 62 minutes of Chelsea’s 2-0 win over AC Milan.
But, amid fears that the England international will miss the World Cup, Potter advised caution.
“There is no point looking into the doomsday scenario yet,” he said.
“We need to check and then go forward.”
He said: “Reece is due to see a specialist over the weekend so until we get that information, there is not too much more I can add.
“We need to check the discomfort and see a specialist. Yesterday he felt not too bad but until you get these things checked we never know.”
James, 22, is the latest England right-back to suffer an injury, following Manchester City’s Kyle Walker’s groin surgery earlier this month and Liverpool’s Trent Alexander-ankle Arnold’s injury against Arsenal last weekend.