If Sitton is already talking about his back issues like this, I think his price just went down. He'll be cheaper to keep than many think and I wouldn't be surprised if he's done within 3 years. With more players than ever (still a very small number overall) walking away from the game with health concerns, I think that we'll see more "early retirements" from players who normally would have played for 6-7 more years, especially these guys in the trenches. Their backs, knees, and hips just can't take the abuse.