Diaw needs to get in much better physical shape. I was happy with his conditioning in 2014, but haven't been happy since. All of 2015 I was asking if anyone knew his weight difference because at no point during that season did it look like he was at his 2014 weight. If he doesn't want to get in shape, then I don't want him on the team anymore. If he does get in shape (and stays in shape), then he becomes one of my favorite players.
If he just doesn't want it anymore or have the desire to compete, then he needs to move on.