This guy is really unpredictable.
I'm also in favour of bringing him, of course. But it's more or less like Giovinco - we have a lot of doubts about him, but can't run the risk of him going to Inter and becoming a star.
Honestly, he and his agent clearly have doubts about joining Juve too, and that's a bad start.
The problem is that the guy plays exactly the same way he did when he was 18. Strictly as a RW (or inside forward actually), playing on counters, always passing that long cross ball to the left side of the picht, defending like a mad man also.
He stayed there for too long IMO.
I honestly have no idea where would Allegri play him, since we just don't have a similar guy at the left to offer balance (Coman

)
And there is absolutely no indication that he could play a different position. We'll have wait to see.
This could turn out to be a huge huge flop or a master move. But even if he fails, we're not selling for much less than we bought him. So it's what we have to do.