Burress landed awkwardly while trying to haul in a pass over cornerback Da'Mon Cromartie-Smith near the end of Thursday's practice at Saint Vincent College. The 35-year-old Burress remained bent over on the ground for several moments before getting up and walking to the sideline. He was carted off the field and sported a sling over his right shoulder late Thursday evening.
The Steelers, who open the preseason on Saturday night against the New York Giants, had hoped Burress would become the big red zone target they need while tight end Heath Miller recovers from knee surgery.
Burress signed with Pittsburgh last November and caught three passes in limited action. He was battling Jerricho Cotchery, David Gilreath and rookies Markus Wheaton and Justin Brown for a spot behind starters Antonio Brown and Emmanuel Sanders.