Pennington would return as Chad Henne's backup, a development that would create an interesting situation on the Dolphins' depth chart. They also have Tyler Thigpen and Pat White, a second-round draft choice last year.
Pennington likely would have gotten a lukewarm reception when free agency began at midnight because he's unable to tryout for teams. He's still recovering from a third surgery on his throwing shoulder, but he's expected to be ready for the start of the season.
His value to the Dolphins would be as a leader who could help groom Henne into the role as franchise quarterback.