Moore was a third-round pick by the New York Giants in 2013 but failed to live up to expectations and was eventually cut after an altercation with a teammate in 2015. He finished the year with the Miami Dolphins. After his release from the Oakland Raiders in August, he worked out for the Cowboys but was out of the game until joining the Seattle Seahawks. He suffered a foot injury but managed a half-sack in seven games last season and earned praise from coach Pete Carroll.
He was also arrested on suspicion of driving while intoxicated late last year.
Moore, who played at Rowlett (Texas) High School outside Dallas before going to Texas A&M, will have to avoid off-field issues in order to remain with the Cowboys throughout the offseason.
The on-field expectations are low, but at one point, teams thought highly of him. He has 10 sacks in his career, and the Cowboys hope he can be the next in a line of players who have come in with little fanfare and exceeded expectations, like George Selvie and Jack Crawford.