Blaise Matuidi says he has a better understanding of why Cristiano Ronaldo has won five Ballons d'Or in his career, hailing his new Juventus team-mate as a "working monster".
Juve lured the Portuguese star to Turin this summer in the most high-profile move of the summer as they look to maintain their dominance of the Italian league and improve their chances of Champions League success.
And Matuidi has already been impressed by the five-time Champions League winner and is enjoying playing in the same team so far.
"He's the best player in the world, and it's a lot of fun playing with him," the French midfielder said.
"He's a working monster. He arrives first and leaves last. He's working and working ... I've never seen that and I understand better why he has five Ballons d'Or."
Their European adventure begins at the Mestalla when they visit Valencia in September 19.