 On June 25, 2019, having completed his contract with the Kings, Scherbak was not tendered a qualifying offer by the club, releasing him as a free agent.The following day, while opting to return to Russia to continue his career, Scherbak was officially signed to a three-year contract with Avangard Omsk of the KHL.In his first KHL season in 2019–20, Scherbak opened with just 2 goals and 6 points through 16 games before he was released by Avangard Omsk.