I'm still hoping he gets extended this year, maybe during the playoffs but more likely during the offseason, for something around 5 years averaging 8 per, with a really good set of incentives, fully guaranteed for the first couple of years and just for injury on later years. I think he's smart enough to go for that, it's a good deal for both sides.
If he does not go for it he plays next year for less than 10% of that, and bears the risk of injury with no relief. Dion Lewis is a good example of the wisdom in taking an early extension even if it looks like leaving money on the table.
His agent is a hometown lawyer with only one NFL client: Malcolm Butler. He's not likely to get his head turned by maximizing bling potential, Butler knows who are the people who got him to where he is and gave him the chance to make the most of his talents. If he's smart he'll look at how much better $8,000,000 a year is than frying chicken at Popeye's not how much less it is than $10,000,000 a year later with the risk of injury during that year making it nada. I think he's smart enough to see that.