I think considering that Troy Murphy makes $10m a year and is in the same category as Lee on a role playing basis, Lee's as good as gone.
The recession may affect his contracts over all worth, but regardless, $5m is unrealistic.
Competitive teams could really use Lee's offerings & those looking to push onward and upward next year ie: Portland, Atlanta or Philadelphia (especially in Brand's absence) will probably offer him upwards of $8m/year for 3 or 4 years.
That's not affordable for a team banking on both a need for defense and cap clear out.
Sad but true.