The teenage striker formalizes his switch to the Rossoneri, having penned a three-year deal, and looks set to be the first in a series of forwards arriving at San Siro imminently.
The 17-year-old has agreed terms over a three-year contract with Massimiliano Allegri's side and is expected to be thrown straight into the first team, despite his tender age.
"Caen would like to thank M'Baye Niang for what he brought to the club over the course of the past four years," a statement on Caen's official website read. "The young striker today [Tuesday] signed a three-year contract with AC Milan.
"Caen wish him every success with his new club and in his personal life."
Niang, a France youth international, made his professional debut in April 2011 and went on to make 30 Ligue 1 appearances for Caen, scoring five times.
Milan is likely to follow up the signing of Niang, if reports are to be believed, with those of Bojan Krkic and Nicklas Bendtner, as the club strives to plug the gap left by Zlatan Ibrahimovic.
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