In December 1996, he was signed by Serie B side Cosenza, played 25 league matches and scored 10 goals for the southern Italy club.
As Cosenza's financial crisis, he was transferred to Umbria side Perugia in June 1997, the last few days of the 1996–97 fiscal year, for 850 million Italian lire.
[2] But in October he was signed by Verona along with Antonio Marasco (priced Guidoni 2 billion Italian lire, purchased the 50% rights from Reggiana)[3] He won Serie B champion with the Veneto club.
[5] In July 2001, Guidoni requested the court to void the contract with Salernitana after the club owe him salary, and he had already signed a pre-contract with Palermo.
After Maurizio Zamparini purchased Palermo in July 2002 and bought some of the players from Venezia he previous own, Guidoni became a surplus[7] and on 13 September left for Cosenza again.