Kelley signed a minor-league deal with the Brewers on Wednesday that includes an invitation to spring training, Tom Haudricourt of the Milwaukee Journal Sentinel reports.
Kelley began 2021 with the Cubs but was cut in April before latching on with Atlanta. He made 37 appearances at Triple-A Gwinnett and pitched well with a 1.52 ERA, 1.09 WHIP and 46:18 K:BB across 41.1 innings.