The 27-year-old made the surprising comments during his press conference ahead of his side's showdown with the Seattle Seahawks on Sunday, after playing just five years in the league and his first with the Broncos.
"I set a goal of five years; I've played six," Rodgers-Cromartie told reporters.
"I talk to them all the time. It's not set in stone. I always tell them. They always think I be joking, but I always just say it might be my last go-round."
Rodgers-Cromartie had 31 tackles and three interceptions in the 2013 regular season.