Chelsea starlet Reece James had a scan on a persistent knee issue after Chelsea's defeat at Wolves on Tuesday.
The full-back will miss the visit of West Ham at Stamford Bridge on Monday night but is not expected to need an operation, according to The Athletic.
Academy product James reportedly felt increased pain and fluid in his knee during training on Saturday, resulting in a scan amid fears that the defender would require surgery.
Captain Cesar Azpilicueta is expected to deputise for James at right-back at the London Stadium and at Arsenal on Boxing Day.
21-year-old James has been ever-present in Chelsea's last eight Premier League matches, providing an assist in the 3-1 win at home to Leeds earlier this month.
Playmakers Hakim Ziyech and Callum Hudson-Odoi remain doubts for the West Ham game, with the Morocco midfielder thought to be out of contention.
Ziyech joined training on Friday following a hamstring injury and is more likely to feature against Arsenal.
The Blues are aiming to win for the first time in four games when they face a Hammers side lying two places and a point below them in the table.
This article was most recently revised and updated 2 years ago