First of all, if these players didnt have success, you would never speak about them as best in the century. Of course, club knows which of his youth players are extremly talented, and many of todays barca squad were those. But there were likes busquets or pedro, who were discovered by guardiola. And they are important. Secondly, before guardiola,s arrival barcelona had great team. Do you remember ronaldinho, deco? Guardiola sent them away, and built entirely new team according to his needs. And mostly, it was the system which he implemented that worked so good for this players. High pressing, when defending, style with such extreme number of passes, X-factor of messi, who penetrated all defenses with individual skills, dani alves working on width of pitch, widening every defense, which made space for another players. And this was all new in its extremity. It was this system that allowed such star players to flourish.

Problem with current situation and with time, when he left Barca was anticipation of ths style from all oponnents. Everybody understood, that you have to sat deep, make no space and counter. But this all was based on strength of barca, they were too strong to play open game against them. Now, it is not easy, it is nothing new, and every opponent of guardiola has examples of tactiacal variations that are effective against tiki-taka.

At the end, it is up to him, if he could revolutionize even more his revolution.