May declined his mutual option with the Brewers on Thursday, becoming a free agent, Jon Heyman of the New York Post reports.
May will hit the open market after helping deliver the Brewers a World Series championship over the Rays. The right-hander combined to produce a 4.70 ERA and 1.32 WHIP with 144 strikeouts over 145.2 innings in 31 starts with the Cardinals and Brewers during the 2026 regular season.