Guardiola will return to football on July 1 following his sabbatical from the game, taking up his first management role away from boyhood club Barcelona.
He led the La Liga club, where he began his career as a player, to 14 trophies in four years, including two Champions League crowns and three straight Spanish league titles in four trophy-laden years between 2008 and 2012.
He won an incredible 178 of the 246 matches as coach of the Catalan giants and lost just 21. That's a win percentage of 72.4.
Here, Sky Sports looks back at Guardiola's time in charge of the Spanish giants.
Barcelona's new head coach, appointed as Frank Rijkaard's replacement, decided he needed a fresh squad and sold Ronaldinho, Deco and Gianluca Zambrotta among many others.
He then guided Barca to a domestic and continental treble, the first Spanish side to achieve the feat.
The Copa del Rey was secured with a 4-1 victory over Athletic Bilbao and the title followed after a league campaign that involved a 20-match unbeaten streak and a 6-2 win over bitter rivals Real Madrid at the Bernabeu.
The treble was completed when they beat Manchester United 2-0 in the Champions League final in Rome with Lionel Messi taking centre-stage.
TROPHIES WON: Copa del Rey, La Liga, Champions League.
The Spanish Super Cup, UEFA Super Cup and World Club Cup were added to Barcelona's trophy cabinet before the turn of the year, making Guardiola the first manager in history to win six honours in one calendar year.
They failed to defend their Champions League crown after being eliminated by Inter Milan at the semi-final stage but retained their La Liga title with a record points total of 99.
During the season Guardiola also became the first ever Barcelona manager to orchestrate four successive El Clasico victories over Real Madrid.
TROPHIES WON: Spanish Super Cup, European Super Cup, World Club Cup, La Liga.
Another Super Cup success and La Liga title followed for Guardiola although he did taste his first ever defeat in a final as his side lost 1-0 to Real in the Copa del Rey.
Another Champions League success was secured, again beating Manchester United, this time 3-1 at Wembley after overcoming Real Madrid in the semi-finals.
TROPHIES WON: Spanish Super Cup, La Liga, Champions League.
Victories in the Spanish Super Cup and European Super Cup meant Guardiola had won more trophies than any previous Barcelona manager.
More silverware was to come as Barcelona beat Santos to defend the World Club Cup and they also defeated Athletic Bilbao in the final of the Copa del Rey.
But Barca were beaten to the Primera Division crown by Jose Mourinho's Real Madrid and missed out on defending the Champions League after falling 3-2 on aggregate in the semi-finals to eventual winners Chelsea.
TROPHIES WON: Spanish Super Cup, European Super Cup, World Club Cup, Copa del Rey.
TOTAL TROPHIES: La Liga (three), Spanish Super Cup (three), Champions League (two), World Club Cup (two), European Super Cup (two), Copa del Rey (two).
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