is stiff-arming retirement speculation in the lead-up to 50, concentrating instead on in his 18th NFL season.Once it does come time for Manning to make that decision, however, the will await the news before setting their quarterback plans for the 2016 offseason."He's got plenty of time, Kelly Gruber Jersey ," general manager John Elway said, via the Denver Post. "I think it's never going to be...