Bonucci is too slow to play as RCB.
Which is why Allegri was correct to put Ogbonna on the right against Milan.
People get far too hung up on sides when it comes to centre-halves.
Style of play is far, far more important than whether you are playing on your theoretically stronger side.
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Incidentally, Caceres's challenge on Menez early on the game was a thing of beauty.
Absolutely textbook piece of intimidation from a defender on a forward early in the game.
When a high ball comes, jump high and early and get your knee up in front of you and whack the forward from behind.
That'll make the forward think twice about whether he fancies getting into physcial challenges and it'll have him him worried whenever he's getting the ball with his back to goal for the rest of the game.