Are extend/trade deals still an option? Can you extend for less than the current contract?
$15M is too much for next season. And getting Jefferson as a rental isn't an option. Or, it shouldn't be.
Chopps trade makes sense because it doesn't give up anything you wouldn't have next season, anyway.
Splitter can be signed for MUCH less than $15M per, so he should be the long term guy. Uwe states that Jefferson is a slight upgrade over Splitter. He certainly isn't a $10M/yr difference.