It's also possible that Miami is merely feigning interest to force the Bills to not call their bluff--- the Ellerbe trade helps, but still counts as a cap hit:
Spotrac@spotrac11 mins11 minutes ago
Dannell Ellerbe leaves behind $4.2M in dead cap to the #Dolphins, bringing along cap hits of $8.45M, $6.475M, and $6.025M to the #Saints.