Herrich told dpa, the German Press Agency: "These decisions were made as part of our restructuring, reorganisation and economic consolidation measures."
Dufner (pictured left with Waigand at a TransferRoom Summit) joined Hertha in July 2021. He is a former Sporting Director at the likes of 1860 Munich, SC Freiburg and Hannover 96.
Dufner and Wane had been brought to the club by Fredi Bobic, who was dismissed as Sporting CEO of Hertha in January.
A legal dispute is ongoing between Bobic and the club, which is now majority owned by US investment company 777 Partners.