The Cowboys signed defensive end Toby Jackson, who had thrown his name in the supplemental draft after being academically ineligible as a senior at Central Florida but went unselected. The Cowboys hope he can help get them through camp while Anthony Spencer recovers from knee surgery.
The Cowboys released defensive end Ike Igbinosun, who was hurt in camp last week.
Jackson was one of four players the Cowboys brought in for a workout on Tuesday. Before Central Florida, he played at Navarro Junior College. As a junior at UCF, he had 14 tackles, three for loss, and a blocked punt in nine games.