Dolphins would be insane to not put a claim on on a guy they could get on the Vikings salary. Coming here he would know he'd be 2nd behind Marshall, but Moss has more speed and he is the speedy deep threat Miami is missing. Marshall and Moss with Bess in the slot and Hartline coming in to try and break free since Moss and Marshall will have to be covered. Moss would also be a great decoy to take pressue off Marshall.
Though, it probably won't happen. Dolphins are 4-3, which is good enough for 1st place in the NFC West. Have to imagine the Seahawks or Rams or Panthers want him. But, Dolphins should still put a claim in.
The Vikings have a sinking ship and Moss would probably like to play for a team in the thick of things like Miami, but he can't really choose can he? If the Panthers or Seahawks get the claim he can't say no right?