Sean Lee and the Cowboys have agreed to a six-year extension. (Ronald Martinez/Getty Images)
The Cowboys have agreed on a six-year contract extension with linebacker Sean Lee, according to Lee's agent, Mike McCartney, via Twitter.
Ian Rapoport of NFL Network reports Lee's deal is for $7 million per year with escalators up to $8.5 million per year.
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Lee has been one of the team's best defensive players since being drafted 55th overall out of Penn State in 2010.
His move to middle linebacker is expected to be a key element in the success of Monte Kiffin's new 4-3 scheme.