Real Madrid are once again being strongly linked with a move for De Gea, and it has been claimed in some quarters that the Spanish giants are confident of finally landing the 26-year-old in this transfer window.
Ronaldo was quizzed on the possibility of becoming teammates with the former Atletico Madrid stopper, but the Portuguese has insisted that his club already have a number one in Keylor Navas.
"Keylor Navas is Real Madrid's goalkeeper. De Gea is a very good goalkeeper but he is at United," Ronaldo told La Sexta. "They talk about 50,000 footballers every year and they are always the same. Of the players they talk about, maybe one or two will arrive and that's it."
De Gea came close to joining Real Madrid in the summer of 2015, but a faulty fax machine prevented the deal from going through, and the goalkeeper ultimately signed a new four-year deal with the Red Devils.