Hristo Stoichkov has expressed his belief that Pep Guardiola's "work was easy" at Barcelona, with the team already complete when he was handed the managerial reins.
Guardiola was given the top job at Camp Nou in 2008 after a successful spell in charge of the B team, replacing Frank Rijkaard in the hot seat.
Barca won an unprecedented treble in Guardiola's first season in charge, with the likes of Lionel Messi, Samuel Eto'o, Xavi, Andres Iniesta and Carlos Puyol all at the peak of the powers.
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The Spanish head coach was widely praised for revolutionising Barca's style of play, implementing his famous 'tiki-taka' philosophy based on quick passing interchanges and playing out from the back.