This has been expected. Lions president Tom Lewand said earlier this month the team wanted a new deal with the 25-year-old Stafford, who has thrown for more than 10,000 yards over the past two seasons.
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"That's the wrong way to look at that. When you look at extending somebody like Matthew, he's not going to take less money to extend. That's a very short-term focus to look at."
So Lewand can say a new deal isn't about the salary cap. But it's certainly part of the equation.