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After the game, Lee told the media that the decision to not play was his. He had been listed as questionable with a hamstring injury.
The $2 million bonus was tied to playing time. He is in the second year of a six-year, $42 million contract. His $2.5 million salary would have been bumped to $4.5 million if he played in 80% of the Cowboys' defensive plays this season.
Entering Week 17, he had played in 82.1% of the defensive snaps this season, according to Brandon George of the Dallas Morning News. By not playing, Lee's percentage of plays dropped to about 77%, falling below the cutoff for the bonus.
"It was me who decided to not play," he told the media. "It didn't feel like I was going to be effective enough to help the football team ... If I had a couple extra days I probably could've played, but it was completely my decision I felt like I was not going to be effective and not going to be able to help the team."
In making the decision to not play, Lee said he didn't want to "disrespect" his teammates and coaches by playing at less than 100%.
"I'm not going to disrespect my teammates and my coaches and be out there not playing the right way," Lee said.
He didn't seem concerned with the contract situation, saying that he has a "fantastic contract" and noting that owner Jerry Jones has been "very patient" with Lee despite this very circumstance: injuries.
In a league where most contracts are not guaranteed and teams can cut a player whenever they want, this was a bold move by Lee, but one that probably earns him some bonus points in the locker room and with his owner.