"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.
Wearing the number 7 of his famous dad, eight-year-old Ronaldo Jr scored a brace in either half in a 5-1 win against Lucento, watched by Ronaldo's partner Georgina, according to media reports in Italy on Sunday.
"I think Cristiano will like coming back as he was happy to come back when he was at Real 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".
Meanwhile, Ronaldo has a week off from club duty with the global break taking over.
Cristiano Ronaldo may be struggling to score for Juventus, but his son certainly isn't.
"To be really good offensively you have to be solid at the back, all the best teams are, because that is what allows you the confidence to take risks".
Speaking in an interview with MUTV, Mourinho said: "Difficult for us, hard for them [the other teams]".
The former Manchester United forward was beaten to UEFA's Player of the Year award by Luka Modric, with Ronaldo's agent Jorge Mendes calling the decision "ridiculous and shameful". "I knew that because finishing second last season was hard".
United go to Burnley today desperate for a win. If I say it again now it is not because of two defeats.