The news comes on the heels of trade rumors that broke earlier this morning in which the Broncos would send the ten-year veteran to the Tampa Bay Buccanneers in exchange for a fourth round draft pick.
Rather than face the prospect of competing for a starting position in Tampa, Plummer elected to call it quits, closing out an often turbulant career that included six season with the Arizona Cardinals and four years with Denver.
Plummer's retirement will nullify any potential trade the Broncos and Tampa Bay had agreed to.
Stay tuned to Broncos Update for further information as it becomes available.
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