According to Chelsea manager Thomas Tuchel, Romelu Lukaku and Callum Hudson-Odoi could be available to face Aston Villa on Boxing Day.
The two were among four players who tested positive for coronavirus last Thursday and were expected to be absent for at least 10 days.
However, government rules have now changed, and anyone who registers negative tests on day six and seven are free to stop isolating.
“If I understood it correctly, we need a negative test and we have negative tests for Romelu, Callum and Ben Chilwell, although Ben Chilwell will not be involved against Aston Villa.
“The other two will be on the (training) pitch if they are again negative. Then, we need to see if they have been ill and have symptoms, but we will see.
“It is a Premier League game at one of the toughest places where you can play in Aston Villa.
“It is good news, don’t get me wrong, but I am not over-excited now because I know I need to check how they are,” Tuchel commented.
Tuchel was angry that their match at Wolves last weekend took place and was not postponed like six other Premier League fixtures were.
Cheslea, however, returned to winning ways on Wednesday, December 22, by beating Brentford 2-0 to reach the semi-finals of the Carabao Cup.
Tuchel was forced to hand debuts to teenage academy prospects Harvey Vale, Jude Soonsup-Bell and Xavier Simons, and all acquitted themselves well.
Chelsea will try to regain their form and close the gap between them, Liverpool and League leaders Manchester City in the premier League as they visit Aston Villa on December 26.