After Cowboys cornerback Orlando Scandrick was suspended four games on Monday for violating the league's substance abuse policy, Dallas traded for Patriots corner Justin Green on Tuesday, the team announced.
New England acquired defensive tackle Ben Bass in the deal, which is pending a physical.
Green played in two games last season as an undrafted rookie out of Illinois, but was otherwise on the Patriots' practice squad. The 23-year-old can also return kicks, a role he filled in college.
Bass, 24, out of Texas A&M, played in two games in 2012 but was on injured reserve most of last season. He still has hamstring issues and hasn't practiced much in training camp.
- Chris Mascaro