With Simmons, I don't want to conclude still how he already is because I think that he can still improve if he will be traded into another team. Now if he will be traded and nothing changes then Simmons really is the problem and after that, no one for sure will get him so the ending is he will go back to Australia and play to his national team.
I think Simmons is the problem, considering that he ignored team management and teammates during the off-season. It shows that he is not resistant to stress. So I doubt that Simmons can improve even if he will play next season in another team. By the way, there are rumors that Simmons might be traded to the Kings.