Career
Undrafted, Kukan made his European Elite debut during the 2010-2011 season playing in the Swiss National League A with the ZSC Lions. After two seasons, Kukan left for Luleå High Frequency in the Swedish Hockey League (SHL). Kukan established a role on the blueline with Luleå High Frequency over six seasons before using an National Hockey League out-clause after the 2014-2015 season, to sign a two-year entry-level contract with the Columbus Blue Jackets on June 1, 2015.
Kukan made his National Hockey League debut on March 26, 2016, against the Nashville Predators at the Bridgestone Arena.