Maldini was a legend before buffon started to be a professionist to be honest. He started to play in the 80s and he's been for sure one of the greatest left back of the history of soccer (also juventus fan in his childhood)
Buffon as well as goalkeeper. Why wasting time on that?
Look at real, atletico, barca, Bayern,borussia, Chelsea, man city, man utd, Liverpool, arsenal,PSG, Monaco...
About the last one how is Fabinho going lately?
Darmian? Is he still alive? I am quite sure marotta & co could find somebody that would be not just a backup
About Orsolini he is still too young and too immature for the big step imho
usually it's around that price for a fullback. I have some doubts about both our right back for different reasons (dani alves integrity and will, lichtsteiner age)