Kimbrel, who officially signed with the Cubs on Friday, is roughly two or three weeks away from being ready to join the big-league roster, Jordan Bastian of MLB.com reports.

EDGE Analysis

Kimbrel is understandably not ready to be thrown right into big-league action after enduring a seven-month offseason. He'll throw a bullpen session in Chicago on Saturday before heading to the team's spring training facility in Arizona. He'll be officially optioned to Triple-A Iowa for that period and could throw some tune-up innings at that level before taking over as the Cubs' closer.