After several years of coaching in Austria, Korner signed with the Dutch club EiffelTowers Den Bosch in July 2010.
In the 2011–12 season, Korner won the Dutch Basketball League with Den Bosch, by beating Leiden 4–1 in the finals.
[5] Korner left Braunschweig on April 30, 2016, and took over head coaching duties at Medi Bayreuth a few days later.
[7] After an impressive start into the season with Bayreuth, Korner was selected as the "Team International" head coach for the 2017 BBL All-Star Game.
After six years at Medi Bayreuth, on June 08, 2022, he signed as head coach at Hamburg Towers of the German Basketball Bundesliga.