It makes sense for DeBoer to wait. The number can go up. It won't go down
It's also smart not to get a hundred million dollars while preparing for the playoffs. You never know how things get perceived in the locker room. Why risk it
Focus on winning now. Everything else can wait.
It wouldn't surprise me if this was exactly what's going on. I'd 100% believe DeBoer has a deal but is sitting on it becasue he doesn't want the distraction. Maybe I'm missing something, but I don't see a bunch of key underclassmen running to the portal. I'm guessing he's addressed any questions about his future at Washington with the team. And they'll rightly take him at his word for it.