Recent injury concerns for Rhys James are causing concern for Chelsea, with the club and Graham Potter “fingers crossed” over his prognosis.
The right-back made his first appearance since a knee injury in October that ruled him out of the World Cup on Tuesday in a 2-0 win over Bournemouth.
But shortly after the break, James was forced to leave the field due to another knee problem.
“It’s the same area, so we’re concerned,” Potter said, quoted by BBC Sport. “It’s really too early. He felt something there.
“We need to figure out the extent of this and keep our fingers crossed. Of course, he was very disappointed that he missed the World Cup. It was a big blow for him.”
The initial injury has so far limited Potter’s work with James at Stamford Bridge, but he is a big fan of the English defender.
“Today you could see his quality and what he brings to the team,” Potter added. “He is a world class player. You see it from the outside, but until you work with it, you will not see how good it is.
“He could play for any team in the world and any team will miss him. It was planned to play 60 minutes today, so now he is, of course, disappointed. We hope that things are not as bad as they were and that he will get better soon.”