Sky Sports in Italy report that Cristiano Ronaldo, who tested positive for Covid-19 on international duty with Portugal on October 13, remains well and is symptom free.
Juventus sent medical documents to UEFA a week before the game as per regulations, informing them of his condition.
He will take another test 24 hours before the Barcelona game and a negative result would mean him being available to face Lionel Messi's side.
Ronaldo returned to Italy for his quarantine after being forced to miss Portugal's 3-0 win over Sweden.
Italy's sports minister said the forward may have broken health rules by doing so - something disputed by Juventus.
The Serie A club's president Andrea Agnelli said no rules had been broken.