Roy Keane is one of an ever-growing number of Alex Ferguson's former players who have gone on to enter top-flight management. In terms of success in the dugout, some are closer to being the next Nobby Stiles than Fergie.
Signed by Fergie in 2001, Blanc is presently the head-honcho of the French national team, having masterminded Bordeaux to their first league title in 10 years in the 2008/9 season.
After seven years under Ferguson, 'Sparky' has impressed managing Blackburn, Manchester City and a five-year tenure in charge of his native Wales. Currently at the helm of Fulham.
'Big Eck' served his apprenticeship under Ferguson at Aberdeen. Currently earning the plaudits from impressive results at Birmingham City following difficult spells with Rangers and Scotland.
Now with Sunderland, Bruce has led Wigan and Birmingham, among others, with varied success after captaining United during nine years under Ferguson.
After unsuccessful spells in charge of Middlesborough, Bradford and West Brom, Fergie's 'Captain Marvel' is currently coaching the Thai national team.