#3 Ole Gunnar Solskjaer
In the summer of 1996, Alex Ferguson sought to bolster his strike-force as he tried to sign Alan Shearer from Blackburn Rovers.
However, Shearer chose his hometown club Newcastle United instead and moved for a then world record fee of £15 million. United, for their part, signed a little-known Norwegian for £1.5 million - 1/10th of what Shearer cost - a signing that was greeted with derision or at best, doubt, by United's supporters.
Little did they know that the man who was the ultimate 'super sub ' and would come to be known as the baby-faced assassin would prove to be an exceptional bargain. A deadly finisher by trade, Solskjaer was a Fergie favourite and scored the winning goal against Bayern Munich that clinched an unprecedented treble for Manchester United.
Among other memories, Solskjaer once scored 4 goals in the final 12 minutes of a game against Nottingham Forest, having just come on as a sub and became a cult hero at United.
Solskjaer won 6 Premier Leagues while at United, in addition to his two FA Cups and of course, the UEFA Champions League title. His final few seasons were injury plagued, but he remains a revered figure in the red half of Manchester.