Allegri and Chiellini will take care of him. His price has dropped, rumoured to be between 60-70mill, that's pretty cheap in todays market. You will not get another wc striker who is that young for that price. Imagine, he can be our starting striker for the next 6-7 years, think long term man.
To bet on others "straightening him out" is a foolish risk. How did that work with Dani Alves? And he might have been less of an asshole. If you improve the midfield, we will improve on all areas on the pitch. It is arguably the most important part of a team in the modern game and needs to receive all focus.
