Brown was selected with the 44th overall pick in the 2014 NBA draft by the Minnesota Timberwolves on 26 June 2014. He was later traded to the Brooklyn Nets on draft night.In July 2014, he joined the Nets for the 2014 NBA Summer League.On July 23, 2014, he signed with the Nets.On January 1, 2015, using the flexible assignment rule, the Nets assigned Brown to the Maine Red Claws, the affiliate of the Boston Celtics.On January 8, 2015, he was recalled by the Nets.