he could be in the NBA right now if he wanted because he has that all important potential
he needs the ball more to improve his stock
needs to improve on defense obviously
You should not confuse team success with individual readiness to move on to the next level. You should not confuse readiness to move on with ability to perform at a high level immediately.
If someone is willing to take a chance on Scotty and let him develop while earning a big paycheck, it is hard to think of a reason why he shouldn't take them up on the offer. The question is whether somebody will be willing to do that after this year, and that is, as yet, undetermined.