Buffalo Bills cornerback Leodis McKelvin has become the NFL's highest-paid returner.
A source told FOXSports.com that McKelvin has agreed to a four-year, $20 million contract with the Bills. Further financial details were not immediately available.
McKelvin, 27, was set to become an unrestricted free-agent when the NFL signing period opened Tuesday. He enjoyed a spectacular season on special teams for the Bills. McKelvin averaged an NFL-high 18.7 yards on his 23 punt returns and scored twice. He also averaged 28.3 yards on 18 kickoff returns.
McKelvin, the 11th overall pick in the 2008 NFL draft, started four games at cornerback and played in nine others. He intercepted one pass and registered three interceptions.