The Cubs released Wick on Saturday, Tommy Birch of the Des Moines Register reports.
Wick cleared waivers and was outrighted to Triple-A Iowa on Monday, Maddie Lee of the Chicago Sun-Times reports.
Wick worked around a walk to toss a scoreless ninth inning and earn the save in Wednesday's win over the Blue Jays. He struck out one.
Wick (4-7) allowed four runs (three earned) on four hits while only retiring one batter to take the loss Saturday against the Brewers. He walked one and struck out one.
Wick (4-6) tossed 1.2 scoreless innings of relief and earned the win Wednesday against the Cardinals. He allowed two hits and also struck out two.
Wick (3-6) allowed one run on a hit and a walk in an inning of work to take the loss Sunday against the Brewers.
Wick pitched a scoreless ninth inning to record the save in Wednesday's 3-2 win over the Nationals.
Wick earned a save against the Reds on Thursday, striking out two batters in a perfect ninth inning.
Wick gave up a hit and struck out two over 1.1 scoreless innings Wednesday to record his sixth save of the season in a 4-2 win over the Nationals.