The Buffalo Bills are closing in on a contract extension for wide receiver Stevie Johnson, according to ESPN.com.

The deal would be for five years and keeps a key piece of the Bills' offensive puzzle in place, as Johnson has posted back-to-back 1,000-yard receiving seasons for Buffalo.

UPDATE: ESPN reported that the extension has been agreed upon between Johnson and the Bills.

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Terry McCormick covers the Titans for TitanInsider.com