Real Madrid coach Carlo Ancelotti rates Juventus as Champions League contenders.
Ancelotti is a former Juve coach.
"They are a great team and they proved that last season in the two matches against us, in the group stage," he told Tuttosport.
"Their team were able to stand up to us in the first and the second round. If the younger players capitalise on this experience, the Bianconeri can consider themselves a candidate for the ultimate victory.
"Juventus can stand up to us, to Bayern [Munich] and to Chelsea. Their historical core is composed of the World Champions and world-class foreigners, that is to say, players with great international experience.
"They're just short of a dash of maturity in the younger players."