"Guys are going to get nicked up. Guys are going to come back. Guys aren't going to come back. Guys are going to come back next year. It's the National Football League," Harbaugh said. "Look all around the league. No, you don't lament that stuff. You forge ahead. I'm very confident in our guys and the type of team we're going to have. I'm not worried about it one bit."