Selected by the Cleveland Browns in the sixth round (189th overall) of the 2019 NFL Draft.
- Placed on injured reserve prior to Week 1 after sustaining a knee injury in the preseason finale. Activated off injured reserve and re-joined the active roster in Week 11. Appeared in two games.
- Featured in a pre-draft series by Sports Illustrated's Kalyn Kahler titled "Who Is Prospect X? The Search for the NFL Draft's Most Overlooked Prospect." The piece profiled Forbes, removing his name and replacing it with "Prospect X" and chronicled his pre-draft process and battle to become noticed from tiny Southeast Missouri.
- Helped Southeast Missouri to the school's second playoff berth.