Juventus hero Alessio Tacchinardi believes Leonardo Bonucci has it all to prove at AC Milan.

Tacchinardi feels the defender's reputation could take a hammering.

"He is a great player, but I want to see the real value of Bonucci this season," Tacchinardi said on Italian television.

“At the end of the season, we will see whether he really is strong or whether it was the quality of Juventus which raised his value."