The 18-year-old joined the Rossoneri from French club Caen in August 2012.
"No," he told La Republicca when asked if he regretted not moving to the Premier League. "Arsenal wanted me, but when Milan showed up I had no doubts.
"Can I become the best in the world? I can make it. A club like Milan is the ideal place to grow because of the many champions you can learn from. Serie A is a tough league, physically and tactically.
"In order to get my breakthrough, I need to lead a serious private life. I need to rest and train well. It is not like in France - in Italy, there is real professionalism."
Niang has featured in 10 Serie A games for Milan so far this season.