The Taoiseach has spoken of his sadness at the death of George Best.
Speaking from Hungary, Bertie Ahern said Best was "one of my great sporting heroes.
Taoiseach Bertie Ahern
"As a teenager, I remember being enthralled by George's sensational performance in the 1968 European Cup final which propelled United to a famous victory, Mr Ahern said.
"Not only is he one of the finest footballers this island has ever produced but he is also one of the best players the world has ever seen.
"I wish to extend my sympathy to George's family, friends and legions of fans, he will be well remembered and sadly missed."
Lord Mayor of Belfast Wallace Browne expressed his sympathy on behalf of the people of Best's home town.
"His footballing talent proved an inspiration to generations of younger players, inspiring them to pull on their boots and follow their own dreams - and, for a lucky few, to follow him to the heights of playing for their country," Mr Browne said.
A book of condolence is to be opened at the City Hall in Belfast at 3pm today. It will be open open tomorrow and from Monday to Thursday next week during normal office hours.
SDLP Leader Mark Durkan said it was a "deeply sad day".
"George Best's great talent as a footballer is one of the main reasons why I, like so many others, support Manchester United," Mr Durkan said.
"While he was undoubtedly a flawed genius I hope he will be remembered as one of the greatest footballers the world has ever seen."
Labour leader Pat Rabbitte said Best was an "inspiration to football fans in Ireland, North and South, and throughout the world."
"Quite simply, he was one of the greatest sportsmen Ireland has ever produced."
Green Party leader Trevor Sargent also paid tribute to Best. He said: "What was special about George Best was the way you could always sense the tingle of anticipation which would run through a football crowd when Best took hold of the ball.
"Only a very special and unique talent could instil that type of excitement and expectation."
Fine Gael leader Enda Kenny said: "Pele came out and described Best as 'the best player in the world'. On the day of his passing, it is impossible to challenge that assessment."
