I trust you.
And I thank you.
And I won't quote you.
I see that the definition of "association trained" makes this quota of 4 really easy to reach, as basically most Italian players are trained in Italy when they are between 15 and 21; and that could also include foreigners trained in Italy (say, Aubameyang, Bloudek, Digao?); let's say we have Zambrotta, Buffon, Oddo (well, he could even be club trained), together with Pirlo, Nesta, Gilardino. Honestly, I don't think increasing to 12 in over 5 seasons are so hard to do. Not at all.