Sir Matt Busby was in charge for 24 years and Sir Alex Ferguson remained in situ for 26-and-a-half years. Ruben Amorim also wants to get into the twenties.
Amorim took over at United in November
Amorim took over at United in November
Ruben Amorim wants to remain in charge of Manchester United until he is 60.
Amorim, who turned 40 in January, was appointed head coach in November and United went on to endure their worst season in 51 years.
However, the club have enjoyed a buoyant pre-season and Amorim is "confident" about his first full campaign in charge at Old Trafford.
"When I see team training and team playing, my humour - you call it humour - it goes with the team," he explained. "If I feel that everything is aligned, I feel more excited. If I feel more excited, I see more video, I see more football, I have more ideas. So I'm really confident in this moment.
"I want to stay. I want to stay 20 (years). That is my goal and I truly believe in that. Something will happen. Always do.
"In some moments I will be lucky. I had a lot of luck during my career as a manager and my idea is to stay for many years. But again we know that the results will dictate that. I know that last season I used all the credits but I'm ready to start fresh.
"I think this is not the moment that I felt more pressure in my life. I had my career as a player and I remember to finish my career really soon because of the injuries.
"I remember that me and my wife we have an Excel (spreadsheet) with all the money that we have, all the things that I need. I want to help my family. All this responsibility. And I felt the pressure in that time.
"Nowadays, I don't feel any pressure about that. I just don't. It's more like an ego thing. I want to be manager of Manchester United for a while. And I took five years to choose this club so I don't want to fail. That is the only pressure.
"The other pressure that is that pressure at the end of my career as a footballer was different. That was more difficult to deal with."
Amorim will be back at Old Trafford in two weeks
Amorim will be back at Old Trafford in two weeks
Amorim gave careful consideration to which club he would leave Portuguese champions Sporting for. Liverpool assessed Amorim as a potential replacement for Jurgen Klopp and the Portuguese held discussions with West Ham United about taking over last summer.
When United came calling in October, Amorim initially asked if he could see out the season in Lisbon. United issued a now-or-never ultimatum, with the minor compromise that Amorim could officially take over at the start of the November internationals.
"One of the things is the experience that I had," Amorim added. "I know that it's different. But if you look, Sporting was the same thing. They said that in three months I'm out. They said that I had 3% (chance) of winning one title with Sporting. It was the same thing.
"I know that the pressure is different. But I truly believe on that and I don't like to change club. I like to bond with people and carry on. So, I took, I don't say five years because I was not thinking about leaving during the five years, but the last years I was waiting for the right club. I know it sounds crazy.
"But I chose this club. But I had the feeling. So, I think I'm not going to have that feeling of I need to experience pain. I just want to bond, to be part of it. Until I can, I will stay here."
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