Sir Alex Ferguson has explained that the opportunity to manage his side against Real Madrid at Old Trafford is one of the reasons why he finds it impossible to retire.
The 71-year-old is eagerly anticipating Tuesday's Champions League clash and will savour the occasion as he strives to take United a step closer to a fifth final in the competition during his reign.
Writing in his exclusive United Review column, the boss enthused: "This is what it is all about - a packed Old Trafford, the floodlights on, the pitch glistening and two of the greatest and most romantic clubs in the game about to do battle.
"People ask me why I don't retire after so many years in the game, but how could anyone with an ounce of passion for football in their soul voluntarily walk away from the opportunity to be involved in this kind of occasion?
"I like to think that the pioneers like Sir Matt Busby and Santiago Bernabeu, the president of Real Madrid who gave his name to their stadium, will be up there smiling and excited as the rest of us at the prospect of another dramatic night featuring the best that the game can provide."
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