Cristiano Ronaldo paid tribute to his former Manchester United manager Sir Alex Ferguson, who announced his retirement today.

Ronaldo said on Twitter, "Thanks for everything, boss." and accompanied the tweet with a picture of him and Ferguson on the day he signed for United in August 2003.


Cristiano Ronaldo
Thanks for everything, Boss.

Manchester City captain Vincent Kompany, former United player Ravel Morrison and a slew of politicians, including the prime minister and Labour leader Ed Miliband, also extolled the Scot.


Vincent Kompany
Sir Alex, one of the best managers of all time. After 26 years of success in the game, we all owe him a tribute.


Peter Schmeichel
Disappointed, shocked, sad. Didn't think THAT day would be today.


Ed Miliband
Proud man. Great manager. Staunch Labour Party supporter. Sir Alex Ferguson will never be forgotten.


louis saha
Wow S A Ferguson leaving. Hope is health ok. He is the most powerful man i ever met in my life after my dad. Huge respect for Football God.


Ruud Gullit
Thanks Sir Alex Ferguson for the beautiful years in football. You have been so inportant for the game an...


David Cameron
Sir Alex Ferguson’s achievement at has been exceptional. Hopefully his retirement will make life a little easier for my team


Alastair Campbell
Best manager of all time, great man, bowing out in style, with another trophy on the shelf


Greg Rutherford
In we trust. The greatest UTD manager in history. I had the pleasure of meeting the man. I'm gutted to see him go!


Ruud van Nistelrooy
2001-2006, 219 games,150 goals under the most successful manager in football history. It was a unique privilege.


David James djf
I wish Sir Alex Ferguson an enjoyable retirement. Some bitter memories from many battles, but some oh so sweet too! An amazing manager!


Usain St. Leo Bolt
A major iconic football figure. #mufc#legend