McDonough was placed on waivers by Buffalo on Friday.
McDonough had 23 goals, 44 points and 24 PIM in 65 regular-season appearances with AHL Wilkes-Barre/Scranton in 2025-26. The 26-year-old last played in the NHL in 2022-23 when he scored a goal in six regular-season outings with the Canucks.