The Englishman spent 12 seasons with the Red Devils.
In more than 450 appearances, Ferdinand was managed by Sir Alex Ferguson for all but one of those campaigns.
And the pair won five Premier League titles and a Champions League honour.
But it was not always positive between the defender and the legendary manager.
Sir Alex was well-known for his brutal management style, which become known as the “hairdryer” for his yelling.
And Ferdinand has revealed the time he suffered the manager’s wrath after a European Clash in 2010.
Speaking on Channel 4’s The Big Narstie Show, the 40-year-old said: “We played against Bayern Munich one time.
“I was disagreeing with the tactics on the pitch, screaming ‘why are we bringing him on’.”
Ferdinand’s story comes as:
“And we lost. I got into the changing room and everyone was quiet.”
But the United legend revealed the silence did not last long, revealing how close he got to the manager.
“The manager said ‘shut the door’ while swearing and he came over the top of me,” Ferdinand added.
“I’d never seen the hairdryer.
“And he just went nuts, spit and phlegm coming at me.
“I was disagreeing with the tactics on the pitch and he just went nuts, spit and phlegm coming at me”
“I was shouting back a little bit but he was volleying me.
“I remember Gary Neville went to me ‘Rio, you’re not going to win the argument’.
Ferdinand revealed that his attempt at an apology did not go down well with Sir Alex.
The 40-year-old continued: “But I went the next day to apologise.
“He went mad again.
“He rinsed me again over his paper.
“So I just said ‘you know what, just fine me a week’s wages’, which was big money.