The Special One recently hailed Red Devils ace Nemanja Matic as the best player he has ever worked with following the midfielder’s move from Chelsea.
“Matic, I cannot say that I had better guys than him in my career,” Mourinho said last week.
And according to Spanish transfer outlet Don Balon, Real Madrid talisman Ronaldo took offence to Mourinho’s comments.
The pair worked together at the Bernabeu during Mourinho’s time in La Liga but their relationship was fractured.
Ronaldo and Mourinho had numerous bust-ups, with Spanish journalist Guillem Balague claiming the duo nearly came to blows in his biography on the Real star.
And Don Balon add that Ronaldo reckons Mourinho made the comment to hurt him.