Danny Hultzen announced his retirement from baseball. 

Hultzen agreed to a minor-league contract with the Cubs earlier this month, Chris Hilburn-Trenkle of Baseball America reports.

Hultzen was non-tendered by the Cubs on Monday, Jordan Bastian of MLB.com reports.

Hultzen will be called up by the Cubs on Saturday, Tommy Birch of the Des Moines Register reports.