The two clubs have agreed a joint ownership of the player that will cost the Viola é¼2.5 million.
Perugia's chief office Alessandro Gaucci revealed a few details in the partnership between the clubs before the deal can be completed.
"The negotiations have ended, although there are just a few details to clarify with Fiorentina," said Gaucci.
"That's regarding the players that could join Perugia."