The White Sox are finalizing a deal to acquire closer Craig Kimbrel from the Cubs, the teams announced Friday.
The White Sox are sending second baseman Nick Madrigal and pitcher Codi Heuer to the Cubs as part of the crosstown deal Kimbrel.
The Athletic's Ken Rosenthal tweeted that the White Sox have the "option to retain Kimbrel next season for $16M."
Kimbrel currently has the most saves of any active reliever with 371 for his career. This season, he has a 0.49 ERA and 23 saves. In joining the White Sox, he boosts a bullpen that already features Liam Hendriks, who made the All-Star team this season and leads MLB in saves, with 25.