When both Ferguson and Lucescu eventually decide to call time on their illustrious careers, what will be the defining legacy they leave behind?
In Sir Alex's case, there will always be the detractors who grasp at straws for possible criticism, but his record speaks for itself.
He was a great, if unspectacular player who found his true calling as a coach and as an inspirational leader of men.
Lucescu was also a talented footballer in his younger days. As a manager, he's implemented aspects of the attractive style of football he'd learnt to play as a diminutive, pacy winger.
Both will eventually be defined by their time at only one club—Fergie at United; Lucescu at Shakhtar.
Health problems have led to doubts that they can continue coaching for much longer, but as long as there is breath in their bodies and their passion for the game remains, it is difficult to envision a world without either pacing the sidelines.
Who else in management today could you compare with Sir Alex?