The Lakers can wait until the offseason, but there's no guarantee that with whatever new parameters come with the new CBA or likely a lockout, that Russ will be available just to sign on. Ideally it's the smart move to just wait it out, but seeing as how they've screwed up in free agency, I don't even know if I want it to get to that point where they have to sell Russ on LA.
I'd ideally wait until closer to the trade deadline if possible where OKC has to get something but you don't have to give up as much. I personally just want to keep Ingram at all costs, everybody else can go.
If you're the lakers, you either trade to get him then hope he resigns or wait and see if they can get him as a straight up FA
The difference will be the roster having less talent because they traded it away in the first scenario. and if he doesn't sign as an FA, they're even worse off having given up some pieces for a 1 year rental that won't get them anywhere.
imo OKC has to trade him and start over. Nobody is coming to OKC to help Russ if he stays