Paul George for Oladipo and Sabonis, straight up. No picks included. Absolutely no downside to this trade for OKC at all.
Don't make it? Westbrook probably doesn't sign the extension and you're likely going to lose him and have to start all over anyway, while also having long-term money committed to Oladipo.
Make it? Get out of Oladipo's contract, give Westbrook incentive to re-sign, and lessen his work load for next season.