1. Barcelona (2008 to 2011)
When a certain Pep Guardiola replaced Frank Rijkaard as Barcelona manager in 2008, nobody really knew what to expect.
The Catalan’s prior experience involved coaching the club’s youth players in the B squad.
Yet, Guardiola stuck to his guns and implemented his famous “tiki-taka” possession style of football right from the offset.
Two Champions League and La Liga titles followed in a glorious three-year period.
While Lionel Messi, Andres Iniesta, Xavi Hernandez, Gerard Pique and Charles Puyol were all at the peak of their abilities.
In fact, Messi managed 211 goals and 89 assists in 219 games under Guardiola on route to FOUR Ballon d’Or awards.
And while Guardiola left in 2012, the Manchester City boss’ legacy at Camp Nou still burns brightly to this day.