Right. He'll never reach 89, but then that was never going to happen anyway. But depending on how the franchise has been run in the past few seasons, he MIGHT increase by 3-4 points. And that would be considered dramatic.
Don't put too much stock in projections, regardless of budgets. They could be low, high or close to the mark. Use them as guides to the types of players you want, but don't expect those specific numbers.