Marco di Vaio blames Bologna's problems on the appointment of Beppe Papadopulo as coach in the summer.
Papadopulo has since been shown the door and Di Vaio says their current problems were down to his arrival.
Di Vaio said: "It was an error of assessment in the summer when the coach was confirmed and we're still paying for that because finding a new identity is never easy.
"I am confident, however, because we are stronger than last year."