Gurley got $45M in guaranteed money. Stephen has already conceded that Gurley's deal will be the starting point for negotiations. A contract that pays $25M in guaranteed money is probably not realistic in the circumstances.
At any rate, we'd be taking a dead money hit of $10M for years 4 and 5 (likely $5M per year, assuming he became a June 1 cut), if we don't exercise our options past year 3. That should be factored into any analysis of whether the 5-year extension really would pay Zeke less than going year to year for the next 3 years. What we all care about is the cap charge. Pushing it off into future years (when you no longer have the player) isn't really saving you the cap charge. It's merely deferring the cap charge.