Odds are he won't but when you sign a long term deal like that isn't it accepted that the last couple years are going to be a a sunk cost? A few things that Correa has going for him, for starters is that his defense is far superior than Jeter's or Ripken's ever were, he's so good defensively that even when he eventually loses a step he'll still probably be passable at short, he also has a bat that can play anywhere, for his career he's about 30% above league average which is outstanding so even if he does have to move down the spectrum he can still provide value. Finally he is a former number 1 overall pick, that means something to me cause it shows that he has always had the pedigree which means that perhaps he just may be one of those outliers like Ripken or Jeter that stay valuable late in their careers.