I think Colin Bell is now the only player from bygone eras that gets into greatest ever XI and even that is not a shoe-in. Trautman would have to be a contender but, for me, our greatest team has to play Pep Ball and Eddie wins that race.
Once upon a time I never would have thought to leave out the holy trinity of my youth but times have changed and do change. No player is guaranteed of a place forever in our all-time best XI.
I would say though that I doubt we we ever see a better manager than Pep at City; it's possible and we may get someone who wins more trophies during their tenure despite not being at Pep's level.