But strikers is not Juve's biggest problem, Matri and/or Quag are enough, that Aguero money would be better spent on a world class fullback or a world class left winger.
If Juve can bring Gio back, Aguero wouldn't be needed.
Let's assume the money to buy Aguero can be used to buy Mata or Hazard:
Buffon
Beck Bonucci Chiellini Ziegler
Melo Pirlo
Krasic Giovinco Mata/Haz
Matri
That's better than a 4-4-2 with Matri and Aguero upfront and Bastos or Vargas on the left.