Manchester United legend Sir Alex Ferguson has earned high praise from his Liverpool counterpart, Rafa Benitez, as he prepares to celebrate 20 years in charge at Old Trafford.
Ferguson's reign is unparalleled in modern times at the top level of English football and Benitez has nothing but admiration for his rival.
He commented: "It is amazing to be 20 years at one club, but especially in a top club.
"To do that at a very big club with so much constant pressure shows you that he is a top, top manager.
"I believe he is the number one in England and one of the top two or three in the world.
"To win the high number of trophies he has had over these years says everything you want to know about him. The secret to his success is that he is a very clever man and manager.
"I have found him to be a nice person, you can talk with him without any problems.
"When I was a young manager travelling around and watching clubs, he was kind and helpful to me and not what you would expect from a famous man."