The Chicago Cubs have filled one of the top openings in their front office.

The Cubs are promoting vice president of player development Jared Banner to assistant general manager, a source confirmed to the Tribune. Jeff Greenberg’s departure last year for the Chicago Blackhawks — before he took over as the Detroit Tigers general manager in September — and Craig Breslow’s hiring as the Boston Red Sox’s chief baseball officer last month had left the Cubs front office with one only assistant GM, Ehsan Bokhari, under president of baseball operations Jed Hoyer and GM Carter Hawkins.

Banner spent the last two years leading the Cubs farm system after joining the organization as vice president of special projects before the 2021 season. Before his time with the Cubs, Banner worked for the New York Mets in 2019-20 as their executive director of player development and for the Red Sox for 11 years, including a stint as vice president of player personnel in 2017-18.

The Cubs’ minor-league development under Banner has seen their farm system steadily progress into one of the top five in baseball as some of their top talent has advanced to the upper levels of the minors.