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.
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.