#5 David Beckham
The fact that David Beckham comes in at number five is already a clear indicator of just how brilliant United's No. 7s have been throughout history. The former England international was known as the best crosser and free-kick taker on the planet.
Besides his indisputable quality displayed on the pitch, Beckham was known to be somewhat of a diva in the football world, which was highlighted by him changing his haircuts as frequently as others change their underwear.
His extravagant life off the field and the rumours regarding his transfer to Real Madrid sparked one of the most controversial dressing room bust-ups to date. After Manchester United got eliminated from 2002-03 FA Cup, Sir Alex Ferguson kicked a boot in Beckham's face, all but sealing his move to Madrid a few months later.
Beckham will forever be remembered for his set-piece magic, and most notably his two injury-time corners, that set up the goals in the famous 2-1 UEFA Champions League win over Bayern Munich in 1999.
His ability to have the crowd on the edge of their seats every time he touched the ball was something truly unique and guarantees him a place as one of United's legendary No. 7s.