Lupoli will join Fiorentina at the end of this season on a Bosman.
Lupoli said: “I have chosen Fiorentina for the trainer, the plan, the club and the supporters. I had many offers, but I chose the Viola club because of my family.”
Fiorentina chief Pantaleo Corvino said: “His signing is part of our strategy that we watch the present, but also the future of the club.
“It was the Viola plan that convinced him to choose us. We are now gaining a great reputation of developing young talent and that appealed to Lupoli.”