Ex-supremo believes club should chase Italian star...
The Italian international's revival appears complete as he continues to boast excellent form.
And Secco, who claims Juve had Cassano in the bag, believes the club would be heading in the right direction if they signed him.
"A player like Cassano? Juventus would do well to sign him. I don't know if they will get him. But he is a top player, one who can play at Juve, Milan or Inter," Secco told Il Corriere dello Sport.
"We were very close to getting him two years ago, but there were doubts over his changes from a human perspective. But nothing happened."
Secco was largely responsible for bringing Diego to the club last year - a move that fell far short of expectations.
"It was an absurd year, but these things happen in football. You cannot discuss the player's qualities though. I followed him for two years and he used to run the show at Werder Bremen," he added.
"Am I surprised that he was sold? No. That is the new line from the directors at Juventus: cancel the past."
Secco, who is now an outsider after he was ousted by the club, hopes Juve can show their real value this season.
"I hope they can go as far as possible, but they are not as good as the other three [Roma, Milan and Inter]," he concluded.