Former FAI president Michael 'Milo' Corcoran has passed away following a recent illness.
Elected FAI president in 2001, Corcoran held that position until 2005 - having previously served a five-year term as vice president.
He was part of the current FAI Board and Chairman of the FAI International Committee, where worked closely with various departments along with Board and Council Members.
Considered to be the main driving force behind the creation of the Setanta Sports Cup - a cross-border competition between League of Ireland and Irish League clubs - he served as the tournament's chairman from its inception in 2005.
"In Milo Corcoran, we have lost one of Irish football's true gentlemen. It is with great sadness that I learned of his passing on Monday evening and my thoughts are with his family," said current FAI president Tony Fitzgerald.
"Milo was someone who made a huge impact on so many levels to improve football in this country and his contribution is simply invaluable. From grassroots right up to being FAI president, he made a difference wherever he was and that will be his legacy.
"He will be missed by anyone who knew him and Irish football will certainly be a little poorer without him around. May he rest in peace."
FAI CEO John Delaney paid tribute to Milo, saying that he made "an immeasurable contribution to the game" and had a huge impact on Irish football for many years.
He said: "Milo was a great personal friend of mine, someone who I had the pleasure of knowing for more than 30 years, and someone who I was extremely close to.
"He made an immeasurable contribution to the game and he is someone whose loss will be felt deeply in the world of football.
"The FAI will pay a number of tributes to Milo in the coming days and weeks, and we will miss him greatly. I want to pass on my deepest sympathies to his family and many friends in the game."