Redman had been a free agent after being released by the Steelers in October. He said he tried to play through a neck injury in 2013 but "wasn't myself on the field."
After his release, he went to see Dr. Robert Watkins in California and received two MRIs and a cat scan before being told of the injury to his spinal cord.
Redman said various teams have reached out to him with interest but he had to tell them he could not do it.
The 29-year-old is a former Division II player who went undrafted before signing with the Steelers. He played 51 games for Pittsburgh in his career, running for a total of 1,148 yards and five touchdowns. He also caught two touchdowns.
- Molly Geary