Gasser was assigned to minor-league camp on Monday, Curt Hogg of the Milwaukee Journal Sentinel reports.
Gasser was acquired by the Brewers from the Padres in the Josh Hader trade last summer, and he was promoted to Triple-A Nashville in August of 2022. He accrued a 4.44 ERA and 1.61 WHIP with a 31:16 K:BB across 26.1 frames with the Sounds and could be a candidate to join the Brewers later on in 2023.