During a documentary, Cristiano Ronaldo and his agent, Jorge Mendes, appear to have a relationship of mutual worship.

Mendes, Ronaldo says, is “the best, the Cristiano Ronaldo of agents.”

Mendes appears to be nearly as hung up about Ronaldo winning the Ballon d'Or as Ronaldo.

“It’s a card inside an envelope that can change so much,” Ronaldo says of the Ballon d’Or.

“To see Messi win four in a row was difficult for me. After he won the second and third I thought to myself: ‘I’m not coming here again.’”

Ronaldo comes across as so lonely it is a good job he enjoys his own company so much. “In football I don’t have a lot of friends. People I really trust? Not many. Most of the time I’m alone. I consider myself an isolated person.”