Ferguson (knee) did not practice Thursday, Joe Hoyt of AllDLLS.com reports.
Ferguson was spotted working off to the side with the rehab group Thursday, per Ed Werder of Channel 8 Dallas. The starting tight end still hasn't been ruled out for Sunday's game against the Saints despite having suffered a bone bruise and MCL sprain Week 1, but for a real chance at suiting up he may have to practice in at least a limited capacity Friday, prior to the Cowboys assigning him an official injury designation for the weekend.