Im sure others can vouch for my usualy blatant dis regard toward juve having strong italian numbers in the first team. However imho goalkeeping is a different area. A key area in keeping is communication witht the rest of the team. Italians obviously speak italian, thus immediately the communication will be better than that of a keeper who doesnt speak italian as their mother tongue. This has been a problem for many a traveling keeper.
Do not get me wrong here, i want the best keeper for juve, hence i want everything to be thrown at Gigi to keep him, heck make him Vice-captain, he deserves it for sticking with us.
Mirante isnt yet sure to be the future, but he could be and i would prefer to take a risk on him than wasting truck full of money to replace the irreplaceble with inadequate foreign cover.