Levi was recalled from AHL Rochester on Saturday.
Buffalo placed Ryan McLeod (undisclosed) on injured reserve in a corresponding move. The Sabres have just 12 healthy forwards, though seven defensemen could play if Jiri Kulich (lower body) is unavailable during the team's upcoming four-game road trip that starts Monday in Seattle. Levi's presence on the NHL roster suggests he'll be in the mix to start against Seattle on Monday or Vancouver on Tuesday. However, the team has not revealed its goaltending plans yet.