The legendary Dutch manager spent two years at Old Trafford, winning one FA Cup during that time.
"He was like: 'Do you want a drink?' and I was: 'No, no, I'm fine'. He had a drink and said: 'Tell me who you are'. I mean my name is Juan, I am 26, I play football. 'No, no. Tell me who you are as a man. Do you have family? What do you find important in life?
"From that moment, he can look scary face to face and sometimes goes close to you but, after that, he was a very warm and genuine man. He was more than a football manager with tactics, he is a great human being and I learned a lot from him."
"He was scary. I tell you. He was a very nice man; a very, very nice man; very genuine and very sensible. You wouldn't expect that but he was very sensible."