We begin with a current Nou Camp employee - Barcelona manager Luis Enrique.
Enrique's side clinched the La Liga title on Sunday night with a 1-0 win away at Atletico Madrid, which moved them four points clear of Real Madrid with one game left to play.
The 45-year-old was also a player at Barcelona, representing the club with distinction between 1996 and 2004.
Barca will now attempt to clinch a historic treble, with the Copa del Rey and Champions League finals still to come.
Guardiola has led Bayern to the Bundesliga title in each of his two seasons at the club, wrapping up the title this year with four games left to play.
Prior to arriving in Germany, Pep became the most successful manager in Barcelona's history - leading the club to three La Ligas and two Champions Leagues in his four seasons as boss.
As a player, Guardiola was a mainstay of the Barcelona team between 1990 and 2001.
Laurent Blanc, PSG
PSG secured their third consecutive Ligue 1 championship on Saturday with a win at Montpellier.
Manager Laurent Blanc was a player at Barcelona in the 1996-97 season.
Jose Mourinho, Chelsea
The Portuguese coach developed a fierce rivalry with Barcelona while Real Madrid manager, but in a previous life had been an employee at the Nou Camp.
Mourinho worked as Bobby Robson's translator in the 1996-97 season, before styaing on at the club as a coach until 2000.
Phillip Cocu, PSV
The Dutch manager oversaw a PSV side this season that won the Dutch Eredivisie by a staggering 17 points.
Previously, Cocu was part of the late-1990s Dutch invasion at Barcelona, and played in Catalonia between 1998 and 2004.
It might also interest you to know...
Four of the Champions League quarter-finalists this season were manged by players from the 1996/97 Barcelona team.
They were: Barcelona (Enrique), Bayern Munich (Guardiola), PSG (Blanc), Porto (Julen Lopetegui)
(telegraph.co.uk)
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