Santos missed three weeks of training camp with a groin injury, so it possible that this move could be related to that issue.
Santos, 25, wound up signing on with the Chiefs as an undrafted free agent out of Tulane back in 2014. He returned to the Chiefs this past March on a one-year restricted deal worth $1.797 million.
In 2017, Santos has appeared in three games and converted all three of his field goal attempts along with 12 of 12 extra point tries.
Butker, 22, was taken in the seventh-round of this year’s NFL draft by the Panthers. He signed a four-year, $2.48 million contract with the Panthers and stands to make base salaries of $465,000 and $555,000 over the first two years of the agreement.
Carolina was reportedly fielding trade offers for Butker, but no deal ever surfaced and they later cut him loose before re-signing him to their practice squad.
During his four-year college career at Georgia Tech, Butker converted 43 of 60 field goal attempts (71.7 percent) to go along with 208 210 extra point tries for a total of 337 points.