Balotelli, 30, has been a free agent since July when his time in the Italian top flight with hometown club Brescia came to an acrimonious end.
Italian publication Football Italia report that Balotelli has now started training in the country's fourth division with semi-professional outfit Franciacorta in a bid to maintain his fitness.
The former Manchester City star reportedly has a close connection with the club's directors, who have granted him permission to use their facilities while he remains clubless.