Keller agreed Tuesday with the Royals on a one-year, $4.825 million deal, avoiding arbitration, Kiley McDaniel of ESPN.com reports.
The righty will get a raise of just shy of $1.5 million despite a 2021 season in which he struggled to a 5.39 ERA. He finished the campaign on the 60-day injured list due to a lat strain, but he's scheduled to make his Cactus League debut Wednesday against the Rockies, according to Josh Vernier of 610 Sports Kansas City.