Reece James's latest injury scare is cause for concern for Chelsea, with the club and Graham Potter having their "fingers crossed" over his prognosis.

The right-back made his first appearance since an October knee injury that ruled him out of the World Cup in Tuesday's 2-0 win over Bournemouth.

But shortly after half-time, James was forced from the field with another knee worry.

"It's the same area, so we are concerned," Potter said, as quoted by BBC Sport. "It's really too soon. He felt something there.

"We will have to find out the extent of it and keep our fingers crossed. He's been really disappointed to miss the World Cup, of course. It was a huge blow to him."

The initial injury has limited Potter's work with James at Stamford Bridge so far, but he is a big fan of the England defender.

"You could see today his quality and what he brings to the team," Potter added. "He is a world-class player. You see it from the outside, but not until you work with him do you see how good he is.

"He could play in any team in the world, and any team would miss him. The plan was to play 60 minutes today, so now he's disappointed, of course. We hope it's not as bad as it was and he can have a speedy recovery."