In summer 2003 Fiorentina, at that time at Serie B, bought De Vezze from Reggiana for €300,000, which Roma retained its 50% registration rights on De Vezze. He failed to make a single appearance for the Tuscany side, and joined local rival (and also at Serie B) Ascoli on loan.
In summer 2003, Fiorentina, which was in Serie B at that time, acquired De Vezze from Reggiana for €300,000. Roma held its 50% registration rights over De Vezze. He did not play a single match for the Tuscany team and joined Ascoli on loan.