Burnett plays SS and was due to make $2.83 million this season, no guaranteed $ to be paid. I would look at Burnett.
Heath is supposed to make $2.5 million, is 3 years younger and has $450,000 dead cap for the year and $450,000 signing bonus to be paid so no matter what he would cost $900,000 to cut I believe. We would save $2,000,000 base salary though.
I think the team would keep Heath regardless due to his special teams play and he would be solid depth at safety should any starter at SS or FS go down.