After going undrafted in the 2015 NBA draft, Dukan joined the Sacramento Kings for the 2015 NBA Summer League. On 22 July 2015, he signed with the Kings. On 13 November 2015, he made his professional debut with the Reno Bighorns in a 123–121 loss to the Los Angeles D-Fenders, scoring 14 points in 34 minutes of action as a starter. During his rookie season, he received multiple assignments to the Bighorns, the Kings' D-League affiliate. In the Kings' season finale on 13 April 2016, he made his long-awaited NBA debut. In 24 minutes off the bench, he recorded six points, four rebounds, one assist and one steal in a 116–81 loss to the Houston Rockets. On 4 July 2016, he was waived by the Kings.