Initial reports: six years added on to the two years Elliott still has left on his rookie deal, with $90 million in the extension including $50 million guaranteed. We'll have to wait for more specifics -- how many of those years are just "funny money" put on to spread out the salary cap charge? -- but that is a lot of money for a running back given what research has shown about running back value.
On one hand, we have this research by Steven Ruiz and Josh Hermsmeyer suggesting that Elliott is not as valuable to the Dallas offense as conventional wisdom would have you believe.