Harris is getting examined for a possible head injury during Sunday's game against the Panthers, Josh Kendall of The Athletic reports.
Harris was waived by the Chiefs on Tuesday, Aaron Wilson of the Houston Chronicle reports.
Harris notched four solo tackles across four regular-season games with the Chiefs in 2019.
The Chiefs signed Harris to a contract Thursday, Terez A. Paylor of Yahoo Sports reports.
The Buccaneers waived Harris on Saturday, Jenna Laine of ESPN.com reports.
Harris was a full participant at Thursday's practice after being limited Wednesday with an illness, Eduardo Encina of the Tampa Bay Times reports.