At the pinnacle of the club 's success , they were promoted to Serie B in the 1987 -- 88 season .
At the pinnacle of the club 's success , they were remained there until the 1990 -- 91 season .
At the pinnacle of the club 's success , they were promoted to Serie B in the 1987 -- 88 season and remained there until the 1990 -- 91 season .