The Cardinals will decline Gibson's $12 million club option for 2025, Derrick Goold of the St. Louis Post-Dispatch reports.
Gibson (8-8) took the loss Friday as the Cardinals fell 5-1 to the Guardians, giving up four runs (three earned) on six hits and three walks over six innings. He struck out two.
Gibson (8-6) earned the win against the Yankees on Saturday, allowing one run on five hits and no walks with six strikeouts over seven innings.
Gibson (7-6) allowed seven runs on five hits and four walks over 4.1 innings Monday, striking out two and taking a loss against the Padres.
Gibson did not factor into the decision in Thursday's loss to the Rays, allowing two runs on eight hits and one walk over six innings. He struck out six.
Gibson came away with a no-decision in the first game of Saturday's doubleheader against Atlanta, allowing one run on three hits and two walks over 6.2 innings. He struck out six.
Gibson came away with a no-decision in the second game of Saturday's doubleheader against the Cubs, giving up four runs on 10 hits and two walks over four innings. He struck out three.
Gibson (7-3) earned the win Sunday over the Nationals, allowing three runs on nine hits and two walks over five innings. He struck out eight.
Gibson (5-3) allowed four runs on four hits and five walks while striking out four over four innings to take the loss versus Atlanta in the first game of Wednesday's doubleheader.
The Cardinals list Gibson (back) as their probable starter for Tuesday's game against Atlanta at Busch Stadium.