Why Andrea Bertolacci Was AC Milan's Most Surprising Player in 2015/16

Surprises come in all forms. They can be positive or negative. AC Milan had their fair share of both this season.

The unexpected form of Juraj Kucka and M'Baye Niang were certainly positives. Gianluigi Donnarumma probably qualified as more of a shock.

But the biggest surprise of the season for the Rossoneri wasn't so pleasant.

Milan made three big-money signings this past summer. Striker Carlos Bacca and center back Andrea Romagnoli, who cost €30 million and €25 million, respectively, both had successful seasons. Bacca finished third on Serie A's scoring chart, and Romagnoli made great strides in his development towards being Milan's next top center back.

But the other big signing—one that set…