David Beckham pays tribute to legendary Man Utd coach Sir Alex Ferguson on his 80th birthday with throwback when he signed for Man U at 17

Manchester United legendary coach Sir Alex Ferguson turns 80 years old today December 31st 2021.

Former Manchester United star David Beckham shared a photo if him signing his Manchester United contract with the former manager which marked the start of his incredible career.

Recall that the 46 years old made his first-team debut in 1992 at age 17. 

In his celebratory post to Sir Alex, he was  thankful to Ferguson giving him the opportunity to play for his dream team.

Captioning the throwback picture, he wrote: 'Happy 80th birthday Boss… A man who has meant so much to me since I was a young boy & also gave me the opportunity to play for the club that I always dreamt of playing for THANK YOU.

'Have the best day with Cathy and the family Boss'.