I think the worst possible situation for Kawhi would be to pretend to be hurt and sit out another year.Spurs have no leverage, it will be a diminished return
Going to LA after 2 years of not playing isn't ideal for Kawhi or LAL either. And I'm sure the Lakers can't just stand pat for an entire season. They will have to move on (for 2019 at least). And a lot can change in a year.
I mean both sides can play hardball here, in my opinion.