Milan are one of the biggest clubs in the world, but in recent years they have struggled to win trophies and their performances on the pitch have been mediocre at best.
Leaving Juventus for Milan at this moment in time is a step-down for any footballer, and many Serie A followers would have been surprised at the transfer.
Bonucci is one of the best central defenders on the planet, perhaps even the best, and is a genuinely world-class footballer.
Given that the Italy international is still 30 years of age, the former Inter Milan prospect could play at the very top level for five or six more years at least.
According to The Guardian, it cost Milan a transfer fee of £35.2 million in order to secure the services of Bonucci, which underlines just good a business Tottenham Hotspur did with Manchester City regarding Kyle Walker.
Walker is one of the best right-backs in the Premier League, but based on quality and track record, he is not as good as a defender as Bonucci is.
Despite being 27 and yet to hit his peak, the England international is not worth £54m, but that is exactly what Tottenham chairman Daniel Levy got out of City for the defender.
The fact that Tottenham got almost £20m more for Walker than Juventus received for Bonucci underlines the masterclass business that Levy did.
True, the England international has improved massively over the past three years, but he is still not worth £50m+ especially when Bonucci, who had been a massive success with Juventus and the Italy national football team, cost just over £35m.