The Dolphins are signing Harrison to a one-year deal, Adam Schefter of ESPN reports.
Harrison logged 29 tackles and 2.0 sacks in 10 regular-season games with the Falcons in 2025. The 2018 third-rounder started his pro career as a safety then transitioned to linebacker, a position Miami needed to bolster ahead of the coming campaign. He'll provide his new team with depth at the position as well as special-teams ability.