It's the news no Manchester United fan ever wanted to hear - Sir Alex Ferguson has announced he will step down as Manchester United boss at the end of the season after 26 years at the helm at Old Trafford.
The Scot has won an astonishing 13 league titles since joining Manchester United in 1986, as well as five FA Cups and two Champions League trophies.
Social media sites are in the midst of a meltdown while tributes to the great man pour in.
But it is not only his winning teams and the trophies that make him famous - the inventor of 'Fergie Time' and Squeaky Bum Time' has earned a place in the cultural fabric of British football.
So how do you go about summing up an astonishing managerial career that spanned five decades and is unrivalled in its success? Well, we've given it a go in a few video clips - enjoy.
Of course, we start with the 1999 Champions League final...
In the dressing room after the 1999 Champions League win
"Football bloody hell.."
First day at the office back in 1986
Fergie's second Champions League win
Ferguson confirms Rooney departure back in 2011 in dramatic press conference
Fergie and the balloon
Some people will be happy to see him go...
Manchester United surpass Liverpool's record league title haul
So those are the best Fergie videos out there - but have we missed any out? Leave links to your favourite goals, games and moments below!