Mourinho: Ferguson is unique
Ferguson will mark a quarter of a century at the Old Trafford helm on Sunday, having enjoyed incredible success since taking up the position on November 6, 1986.
The Scot has lifted 12 Premier League titles, five FA Cups, four League Cup trophies and also claimed the Champions League crown on two occasions.
Real Madrid boss Jose Mourinho, who locked horns with Ferguson during his time at Chelsea, told The Sun: "Sir Alex is a unique manager in the history of Manchester United.
"Sir Alex is a unique manager in the history of English football. And Sir Alex is a unique manager in the history of European football. I really wish he stays in the job with the same happiness and ambition for many, many more years."