Ronaldo, Mandzukic and Cuadrado are quite old. Someone like Chiesa would be perfect for rejuvenating the attack.
He has the speed, the work rate, and the mentality of a top player. You can tell he always plays with a purpose, he works hard as hell on the pitch and has been a leader for Fiore since a teenager. His end product has to improve but even at that he is better than Costa. He has all the characteristics of a player that will succeed at a big club.