In the history of Manchester United, two of the most important names have been Sir Alex Ferguson and Ryan Giggs.
The latter was the most successful manager in the history of club football, guiding the Red Devils to an unprecedented 13 Premier League titles.
The former was one of his most reliable weapons on the pitch, with Giggs making United's left-hand side his own during his brilliant career, which spanned three decades.
In his younger days, the Welshman was devastating, giving full-backs nightmares and contributing with goals.
But, this doesn't mean that the relationship between Giggs and Ferguson was always a positive thing.
In fact, the two big personalities had their differences on a few occasions.
One of the biggest clashes between the pair happened in 1996 as United took on Italian giants Juventus in the Champions League.
The Serie A side - with Antonio Conte as their captain - were the most formidable side in Europe and had Zinedine Zidane as their talisman.
United were finding it difficult to cope in the game, with Giggs getting frustrated by Eric Cantona, who was unwilling to drop deeper to influence the play.
What did it lead to? Well, at half-time, Giggs angrily confronted Fergie, suggesting what he thought should happen and then, he actually threw a drink in the direction of the boss.
"It should be said that in the absence of any options my attempts to dribble out of midfield that night were at the less successful end of the scale," Giggs wrote in the Telegraph.
"My argument with Sir Alex ended with me throwing a drink which hit a kit skip and landed at the feet of my boss. I knew exactly what was going to happen.
“McClair,” Sir Alex said immediately, “you’re coming on”. Then he looked at me. “And you’re coming off.” My first attempt to be a dressing room know-it-all had failed miserably. I was fined one week’s wages."
Ouch, lesson learned, never cross the legendary Scot.
Fergie was renowned for his disciplinary demeanour and much of his success was down to how he kept players in line and restricted any sort of rebellion.
It was probably the last time Giggs thought his word was ever more important.
United lost both group games to the Italian's that season, with both of them finishing 1-0.
The Bianconeri would make it all the way to the final in Munich, however, the likes of Zidane and Alessandro Del Piero were defeated by Borussia Dortmund.