Sources don't expect the Dolphins to head into the regular season with four quarterbacks on the roster, and with Chad Henne firmly entrenched as the starter, Tyler Thigpen, Chad Pennington and Pat White are the candidates to be moved. It's been said that Thigpen is the signalcaller most likely to be traded, and we're told Miami would like to move him before the draft. However, teams in need of a backup could wait until closer to training camp to make a swap to fill that hole, and there's a good chance the Dolphins will have to wait a bit longer to find a suitor for Thigpen.