FORT LAUDERDALE, Fla. -

A grass-roots campaign to convince the Miami Dolphins to bring Peyton Manning down to South Florida is now in full force.

The group Manning to Miami has set up a website and today unveiled a new billboard alongside I-595 in Fort Lauderdale.

The longtime Colts quarterback, who missed the entire 2011 season due to a neck injury, is expected to become a free agent in the next few weeks as Indianapolis prepares to move forward with expected top draft pick Andrew Luck.

The Dolphins, having searched for a franchise quarterback since Dan Marino retired, are said to have interest in signing Manning.