The ex-England forward played for City during the 1981/82 season, making 29 appearances and scoring 14 goals.
Francis made history when he moved to Nottingham Forest from Birmingham City in 1979 becoming Britain’s first £1million player and helping Brian Clough’s side win the European Cup.
In a hugely successful career, he was capped 52 times by England and also played for Sampdoria, Atalanta, Rangers, QPR, Sheffield Wednesday as well as spells in the United States and Australia.
He went on to become a highly-respected manager during spells at QPR, Sheffield Wednesday, Birmingham and Crystal Palace as well as working in the media.
Signing Francis from Forest in September 1981, City fans were excited to see the striker in a Sky Blue shirt.
More than 10,000 supporters travelled to Stoke City to see his debut for the Club and he scored twice in a 3-1 victory.
However, he was sold to Italian side Sampdoria after less than a year following the 1982 World Cup in Spain.
Everyone at Manchester City and the Former Players Association sends their condolences to Trevor’s family and friends.