Thomas (knee) was a full participant in Tuesday's practice, Brad Biggs of the Chicago Tribune reports.
Thomas had been dealing with some knee soreness. The wide receiver is back in action after just about a week's absence. Thomas is competing to be a first-team option at wide receiver, with Kalif Raymond and Jahdae Walker as the primary competition. The 22-year-old's prompt return to the field means he can continue to display his special teams and offensive versatility throughout the preseason. The rookie third-rounder's next opportunity to prove himself should come in Saturday's preseason showdown with the Bengals.