De Gea and Ronaldo are both represented by Jorge Mendes.
And Spanish news outlet Don Balon say Ronaldo is keen for the influential fixer to bring the goalkeeper to the Bernabeu.
De Gea, 26, is a long-term target for the La Liga champions.
The Spain international was on the cusp of a big-money move back to his homeland in 2015.
But the transfer controversially collapsed due to administrative issues.
It’s suggested Real and De Gea are still in constant contact.
And De Gea, who started his career at Atletico Madrid, wants a return to the Spanish capital.
Don Balon say transfer talks could take place after the European Super Cup clash between the two teams on August 8.
However, there could be one spanner in the works.
Don Balon say club captain Sergio Ramos isn’t keen on the club signing De Gea.
The centre-back would reportedly prefer Zinedine Zidane to persevere with Keylor Navas.