Unitas, of course, played 17 years for the Colts when they were in Baltimore, then finished his career with one season in San Diego at age 40.
Now it's Manning's turn to move on.
"I want to get back out there and play. I don't feel like everybody will say, 'He has to do this' or 'He has to prove that.' I don't feel that way," he said. "I know how much I love being a quarterback and love football and I want to go play again."
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