Juventus kind of transfer for cb would be Ledley King from Spurs; free transfer, old enough. And cause he has distinguished injury record, he would be a great heir to Ramsay and Khedira. Tick all the boxes. And as a bonus that transfer makes Juve look like a modern protagonist in terms of transfers, cause really no one else hires retired footballers.
To midfield the one is Özil: free transfer, quite old, does not play much but wants a wage from hell. So allmost like Dybala but not quite.
And of course at least 5 year contracts to both of them, so we would have that Amauri / Bonu vibe in the team.