Smith missed the final 11 games of last season with a spinal bruise while with the Browns. He should be a free agent when a new labor agreement is reached but has expressed interest in returning to Cleveland.
"Glad to be back!!" Smith said in a text message to the newspaper. "Can't wait."
Smith, 33, started working out about two months ago and was anticipating the medical clearance given by his spine surgeon, Dr. Robert Watkins.