Look I think Pep is one of the best ever but he's definitely not the Goat. He's never challenged himself. Inherited the best player to ever play the game at Barca along with arguably the best ever midfield. Bayern, enough said. And then financially doped City during a time when Arsenal, Chelsea and United have for the most part been a shit show. Other than Liverpool he's had no real competition. Also he's never really had to rebuild a team and I don't see him sticking around at City to do it either.
Will he still be winning league titles and Champions League titles in his 60's like Sir Alex and Carlo. I doubt it.