Speculation is rife that Juventus defender and Italy international Bonucci is closing in on a shock move to Milan, with other reports claiming a rift between him and head coach Massimiliano Allegri.

Bonucci's agent refused to dismiss speculation amid reports of a €40million fee for the 30 year-old – also a target for Premier League champion Chelsea and Manchester City – and the news has taken former Juve captain Del Piero by surprise.

"I didn't expect it," Del Piero told Sky Sport Italia. "It looked like a joke, the news came like a bolt from the blue. It is a very, very amazing deal, I would not have thought about such a thing."

Since moving to Turin from Bari in 2010, Bonucci has helped Juventus to six successive Serie A titles as well as three Coppa Italia crowns and as many Supercoppa Italiana trophies.

Bonucci has also featured in two UEFA Champions League finals for the Italian giant.