Fiorentina's right to purchase Ghezzal is believed to be set at €10m.
“I'm very happy to be here, I'm looking forward to starting," Ghezzal told Firenzeviola.it
“Can't wait to begin training, so I'm very happy. Thank you."
Ghezzal scored three goals in 23 competitive appearances for Leicester last season.
The Foxes had purchased him from AS Monaco for €14m in the summer of 2018.