I agree with the lethargic part, and doesnt strike me as a hungry player etc, but on pure playing ability, he is a top quality midfielder, and in this current dissolute Juve and its midfield. Trust me, he would be a massive upgrade, for that sum, its a no brainer. If we dont get him, who of similar quality or better would you suggest we go for?
I know Serie A has fallen off quality wise, but he is still quite assuredly the best midfielder in Serie A. His only real competition being Barellla, who he is better, because of the creative and attacking qualities he has over an all action type like Barella.
I honestly would hate it so much if Inter get him, them having the two best midielders in league same time would be too hard to compete against.
But mainly I want him to have a CM that can unlock Vlahovic, because most of the service Vlaho gets with allegri is crosses, while SMS is type of CM who allways tries to find the CF with through balls all game long (not that Vlaho moves into channels off ball as well as Immobile does):