Here is a DP article appropriate for this thread.
1. The offensive line
Four players who were starters last season are coming off surgery, including left tackle Ryan Clady. And Clady, who's hoping for a long-term deal, has not been with the team in the offseason. It means the Broncos still could be juggling things up front into training camp or even into the regular season.
2. Replacing Elvis Dumervil
The Broncos believe Von Miller is poised for even bigger things in 2013 and that Shaun Phillips, Robert Ayers and others can make up the difference for the loss of Dumervil. But teams are going to throw plenty at the Broncos' defense and pressure on the passer will be a priority.
Two starters on the offensive line — center J.D. Walton and left tackle Ryan Clady — are recovering from surgeries and didn't take part in team workouts over the past two months. Clady, who was designated the team's franchise player (a one-year contract worth $9.828 million), hasn't participated in any of the Broncos' offseason programs because he is hoping to get a long-term deal as he works his way back from shoulder surgery.