Cassano's deal was a gamble for Parma, which in the end paid off.
Ghirardi also praised the work of sports chief Pietro Leonardi: "Cassano? I have to say he was great. He took a pay cut to come here and he has had his rewards.
"Leonardi also deserves a lot of credit in this Parma. You win together and lose together, Leonardi represents the club.
"But the credit goes to all the players, the club and the staff.
For the big stories and the banter follow us on Twitter: @tribalfootball