Miller spent the past four seasons with the Jacksonville Jaguars, recording a career-high four sacks in 2015. His 2016 season was cut short due to a torn Achilles in Week 7 against the Oakland Raiders that landed him on injured reserve.
After the Jaguars released Miller in March, Nathan Jahnke of Pro Football Focus noted he could be an option for teams seeking a two-down nose tackle.
The Chiefs lost Dontari Poe in the middle of their defensive line when he signed with the Atlanta Falcons as a free agent. They did bring in Bennie Logan to take over as their primary nose tackle, with Montori Hughes and Cam Thomas in backup roles.
Miller had a successful 2015 as a run-stuffing nose tackle. The Chiefs are betting on his ability to return to that form at the age of 30 next season, making him a solid low-cost investment.