SirAlexFerguson - The legendary Manchester United manager was the epitome of footballing success throughout the 21st century. Ferguson's reign at Manchester United saw him build a dynasty in the game that stood for a long time.
Mourinho leaves Old Trafford two-and-a-half years after joining the club, having succeeded Louis van Gaal as the third permanent manager since SirAlexFerguson's retirement.
Stories of discord and inept leadership within the United hierarchy under other managers post-SirAlexFerguson have been well profiled in the years since.
A real coup for the club at the time, the acquisition of the 25-year-old promised to deliver United endless amounts ofsuccess - after all, they were still used to being a trophy-winning machine under SirAlexFerguson.