Howard, 25, made his major league debut last season, appearing in four games for the Rockies and giving up just a single earned run in four innings. The Georgia native was a third round pick of the Rockies in 2014, spending most of his time in the minors as a starter. Last year with Triple A Albuquerque, Howard started 21 games, earning a 3-8 record with a 4.95 ERA.
The Rockies will presumably look into bringing Howard back, but with their 40-man roster maxed out, the non-tender gives Colorado a valuable roster spot to work with.
Meanwhile, Colorado agreed to a new one-year, $1.6875MM deal with lefty Chris Rusin yesterday, while tendering contracts to their other arbitration eligible players. The Rockies 40-man roster now sits at 39.