20 years at United

Sir Alex Ferguson
The greatest manager of all-time.

The players come and go. Norman Whiteside, Paul McGrath, Bryan Robson, in comes Paul Ince, Roy Keane, Brian McClair, Andrei Kanchelskis, Peter Schmeichel.
Then came Cantona.
The first double.
Then Sparky left.
Andy Cole a record transfer.
The kids came in, Neville brothers, Butt, Beckham, Scholes.
The second double.
Lee Sharpe left.
Ole Gunnar Solksjaer came not knowing he will score the goal of his life.
Poborsky and Cruyff left.
The King retires.
Jaap Stam and Dwight Yorke came.
Treble winners. Crowned at Nou Camp.
Schmeichel left.
In came Veron.
Ruud Van Nistelrooy came.
Beckham leaves, Stam leaves.
Rio Ferdinand enters and misses drug test.
Alan Smith, Ronaldo and then Wayne Rooney.
Keano retires.

Like what Gary Neville said, unless you were 10 years old before 1986, you only had one boss. And that is Sir Alex.