Per a source, the Cowboys are expected to sign rookie defensive tackle Toby Jackson to the roster on Wednesday to shore up the injury-depleted defensive line.
The Cowboys need to make a roster move to clear room to add Jackson. Both moves should happen Wednesday.
Jackson got the nod after being one of four players brought in for workouts on Tuesday. The others were defensive end Eric Bakhtiari and defensive tackle Bobby Skinner and guard Rokevious Watkins.
Jackson, academically ineligible for his senior year at Central Florida, put his name in the NFL supplemental draft in July but was not selected.
The needed reinforcements because of loss of defensive end Cameron Sheffield for a couple of weeks with a groin injury at position that was already without tackle Jay Ratliff (groin) and ends Anthony Spencer (knee) and Tyrone Crawford (season-ending Achilles surgery) and Ike Igbinosun (ankle).