The Diamondbacks extended a one-year, $22.05 million qualifying offer to Gallen on Thursday, Jeff Passan of ESPN.com reports.

EDGE Analysis

Gallen is coming off the worst season of his MLB career. His 4.83 ERA, 15 losses, 8.2 K/9 and 1.5 HR/9 were all career worsts. The right-hander turns 30 next August. Though it's unclear just how large the market will be for Gallen after a down year, he could decline the qualifying offer in hopes of securing a long-term deal. If he goes elsewhere, Arizona would receive draft compensation.