Speaking on the BBC documentary, Sir Alex Ferguson: Secrets of Success, Ronaldo revealed how Fergie showed great understanding before his father's death in 2005.
SIR Alex Ferguson ruled Manchester United with an iron first, or at least that's the myth.
But, Sir Alex was a different breed, according to former rival David Moyes.
"Sir Alex was great at phoning managers when things weren’t good and wanting to help," Moyes once revealed.
Sir Alex's relationship with Cristiano Ronaldo has been well-documented.
