Harris spent the past two seasons with New Orleans after signing with the Saints in 2016 as an undrafted free agent out of Texas A&M.
The decision to waive Harris came two days after New Orleans' 24-20 win over Jacksonville in its preseason opener.
Harris drew two penalties in pass coverage against the Jaguars, according to the Times-Picayune.
The 5-foot-11, 190-pound Harris appeared in 21 games over the past two years, making one start in each season. He had 15 tackles and two passes defensed in 2017.