I am going back to my 2015 stance, ALL in for Romagnoli. I will also take Rugani or Caldara. I want (badly) an Italian CB and those 3 (plus a 31yo, soon 32 Bonucci) are the only class ones the entire nation has atm (Chiellini being too old, but if (impossible) he came on a free, then HELL yes, he has 2 years left in him, and could be a Terry godfather/teacher type for AC and the other young Chelsea beasts.
Filippo Romagna at Cagliari is maybe another, and 26yo (so no long term upside) Gian Marco Ferrari from Sassuolo and that is literally it. If you want really young potential ones, Alessandro Bastoni (19yo) at Parma and Marco Varnier (just turned 20) at Atalanta are the literally only others I remotely have encountered. They are stretches, but ones to maybe watch.
Its crazy how weak they have become in terms of CB's, when they historically have been the number one nation at churning them out over the last 30, 40 years.
Spoiler alert... Alessandro Nesta is my idea of a PERFECT CB, in a Platonic form.