Matt Busby is number 12 in 90min's Top 50 Great Managers of All Time series. Follow the rest of the series over the course of the next three weeks.
Sir Alex Ferguson was Manchester United manager for longer. He won 27 trophies and has a stand at Old Trafford named after him. But if Fergie is the father of the modern Manchester United and the club's recent successes, Sir Matt Busby is the grandfather who set it in motion.
These days, United are the one of the biggest clubs in the world, a truly iconic football institution and one of only five to have completed the set of all three major European trophies.