The Chiefs signed Arnette to a reserve/future contract Thursday, Matt Derrick of ChiefsDigest.com reports.
Arnette joined the Dolphins practice squad in mid-December after being waived by the Raiders in early November, but he failed to appear in any games with the team before the end of the season. The former first-round pick will now join the Chiefs for the 2022 campaign while still looking to secure his first career interception.