Today marks the 80th birthday of Sir Alex Ferguson. Former Manchester United manager and arguably one of, if not, the greatest coach of all time.

He is British football's most successful manager having won 13 Premier League titles, two European Cups, five FA Cups, four League Cups and one European Cup Winners' Cup.

Fergie signed some of the world's best during his tenure at Old Trafford

During his 27-year reign at Old Trafford he gave Manchester United fans the greatest period of success in their history, and whether you love or hate the Red Devils, he gave football clubs worldwide a masterclass on how to win a trophy or two and how to produce numerous world class starting XIs!

Ferguson signed over 100 players during his time at the club. These included goalscorers such as Wayne Rooney, Ruud van Nistelrooy and Cristiano Ronaldo. Defenders like Rio Ferdinand, Dennis Irwin and Jaap Stam and not forgetting captains such as Roy Keane, Eric Cantona and Steve Bruce.

This is all without mentioning club grown talents such as Paul Scholes, Gary Neville and David Beckham to name a few!

But out of Ferguson's signings, who were the best? With this in mind, TalkSPORT EDGE lists the manager's top 10 signings!