FA chairman David Bernstein paid tribute to Sir Alex Ferguson's 27-year reign at Old Trafford.
He said: “Sir Alex Ferguson’s achievements are truly remarkable – he is genuinely one of the greatest managers of all time and certainly of the modern era.
“His contribution to English football has been outstanding in every regard and, in The FA’s 150th year, it is something that should be celebrated.
“On behalf of The FA I’d like to wish him a happy and healthy retirement.”
Sir Alex Ferguson's brisk way with words has influenced the way we talk about football.
A timeline of the life of outgoing Manchester United manager Sir Alex Ferguson.
A special photo gallery of Sir Alex Ferguson's career at Manchester United as he steps down from his post as manager of the club.