"They don't hide", he said admiringly, having previously gone public with his own disappointment at United's failure to land more than one of his transfer targets.
The 33-year-old should be fully fit and raring to go too, with Ronaldo missing from his national team's squad for the upcoming fixtures against Croatia and Italy.
"But he comes back to do a job for them, like he did for Madrid".
Douglas Costa, who came off the bench for his 50th Juve appearance, added: "Cristiano is playing in a new league and understandably he wants to score but he also knows it's the three points that matter most". In the Spurs match, we were positive and strong and I think the opponent, a very good opponent, felt they were in trouble. "We are willing to play in a way that carries risk, but if you make mistakes in defence it breaks the dynamic". "The global break will help him to become sharper". Mourinho said: "It is his own decision, I never ask players not to play for their country or interfere with selection".
Ronaldo has now gone 23 shots without a goal since joining Juve, although it is hard to imagine his goalless streak continuing for much longer.
Things are set to be emotional as Ronaldo is set to face United in the Champions League.
While he has had slow starts to seasons in the past, notably his the beginning of his final year in Madrid, Ronaldo's misfortunes in front of goal are magnified somewhat by the fact that his arrival meant the shipping on of Gonzalo Higuain to Milan. If I say it again now it is not because of two defeats.