England defender Marc Guehi will be assessed on Friday to see if he is fit to play in Saturday’s World Cup quarter-final against Norway.
The centre-back has a slight hamstring injury following England’s 3-2 victory over Mexico in the last 16 at the Azteca Stadium.
Meanwhile, right-back Reece James returned to training as expected on Thursday and is in contention for the game, but Declan Rice did not train again because of a sickness bug.
Initially it was hoped that Guehi was carrying muscular fatigue and that he would be fit to face Norway.
But it is understood the Manchester City defender has a hamstring strain.
Guehi is desperate to prove his fitness and remains optimistic he can be involved.
If he cannot train with the squad on Friday then there will be major doubt over his inclusion against Norway.
The issue is not viewed as serious, but with seven-goal Erling Haaland to cope with, England head coach Thomas Tuchel can hardly afford to take fitness risks with defenders.
Midfielder Rice is understood to have missed a second successive day of training because of a sickness bug.
Rice had already been suffering with a neural issue affecting his hamstring and lower back, and it has been exacerbated by illness.
England have taken steps to ensure the bug does not spread.
In better news for Tuchel, first-choice right-back James returned to full training for the first time since suffering a hamstring injury during the goalless draw with Ghana.
James did not complete the entire session but is expected to be available to face Norway providing he feels no ill effects from Thursday’s session.