It's more of a Roma thing, the inconsistency. I don't think a player can be that inconsistent in this Juve. We're a machine and someone with Pjanic's playmaking skills will make the machine even more well oiled.
According to La Gazzetta dello Sport, the player Allegri specifically requested was Roma midfielder Pjanic. I can soooo imagine Allegri asking for Pjanic of all people. Any quality playmaker will make us much better, and Pjanic is one of the elite playmakers. Will suit us great.
I'm not sure about the release clause, though. If it exists, someone else will be faster to get him and offer him higher wages. If it doesn't exist, then Roma will never sell to us for less than 40m, and we surely won't pay more than that.