One of Sir Alex Ferguson's greatest ever achievements as manager of Manchester United was his work with Cristiano Ronaldo.
The iconic Scotsman took a gamble in 2003 by splashing over £12m on the 18-year-old following an impressive performance against the Red Devils in a pre-season friendly with Sporting Lisbon.
Ronaldo took his time to adjust to the harsh demands of English football and many believed his selfish nature and cocky demeanour would cost him in the Premier League.
But Fergie worked his magic and five years after signing the Portuguese forward, Ronaldo won the coveted Ballon d'Or award.
The two eventually parted ways in 2009 when the now 35-year-old signed for Real Madrid in a record-breaking deal worth £80m.
But the two legendary footballing figures have remained close and when Ronaldo won Euro 2016 with Portugal, Fergie was there to congratulate him like a proud dad.
Who's cutting onions then, eh?!
Ferguson's relationship with Ronaldo is one of the most wholesome in football and there's one particular instance of the former United manager acting as a fatherly figure that really tugs at the heartstrings.
"When my daddy was sick in London, and he was in hospital very bad [asks interpreter] in a coma,” Ronaldo explained on the BBC documentary ’Sir Alex Ferguson: Secrets of Success’ in 2015. "I had a conversation with him [Ferguson] and I said: ‘Boss, I don't feel good.’
"We are in a key moment in the Champions League, and I said I don't feel good and I wanna see my dad. He said: ‘Cristiano - you wanna go one day, two days, one week? You can go. I'm going to miss you here because you are important, but your daddy is the [priority].’
“When he told me that, I feel like this guy is unbelievable. He the father of football for me."
A truly unique relationship in the often hostile world of professional football.
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