Only Chiesa is top level star player in that list. Its not wether they italian or not in that list, but wether they good enough or not.
Its not a theory, its a historical fact italian top players as core unit is good for the culture building and consistent winning for Juve throughout history.
Its another matter italy produce much less of these players now. But it also makes it much more important to get the rare few who can become that for Juve when opportunity arise. This imo is such an opportunity. As a Verratti (vice Pirlo) was decade ago, or a young Donnarumma (vice Buffon) etc. Inter gotten Bastoni and Barella and prolly can keep them their whole careers or aslong as they good.
But end of the day, nationality aside, its mainly about if the player is good enough or not, but for what Salvo means, it makes sense to want italian top players as part of the core of Juve, because of the proven history of it.
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Yeah I know, human nature, but its just funny, because I see most of the guys reacting like this as sensible guys so pointing it out.
Balk on the price for sure, I get it, but its silly to balk about the players quality now after hand.