You absolutely do not trade Barbosa without sending Diaw as well. Barbosa is your only bargaining chip to get rid of Diaw. If you trade Barbosa without Diaw, we will be stuck with Diaw for the duration of his contract.
I would love to keep Barbs and continue to bring him off the bench. However, if that is the only thing we can do to get rid of Diaw...I am for trading Barbs.
Two years ago everyone was upset that the team might not extend Diaw. Now he's the #1 most hated guy on the team. Like everyone else, I've been unhappy with Diaw not playing up to his potential, but this hatred seems to me a bit over done.
The criticism of Barbosa is based in part on the problems he has with the Spurs in the playoffs, but Diaw had a pretty good series against the Spurs: 14.6 ppg, 54.7% shooting, 5.6 rpg, and 4.6 assists. In his last two games when moved to SF:
Game 4 - 20 points on 10 or 19, 10 rebounds, 8 assists
Game 5 - 22 points on 11 of 17 8 rebounds, 8 assists
What was more imporessive was that he guarded Tony Parker who went
Game 4 - 7 of 17
Game 5 - 9 of 21
Before giving up on Diaw, I'd like to see him on the wing rather than being overpowered on the inside all the time. I never thought he would be able to defend the quicker wings, but if he can limit Parker, then that's not a big concern.
One other thing, I've been frustrated by the way his time has been wasted playing with the French team. He's never spent his entire summer working on skills development. I'd really like to see what he could do with a reliable three point shot along with better form on free throw shooting.
If Diaw does continue on the inside, he needs to get a lot stronger so he can become a good rebounder. Equally important, the offense would need to be altered so he could play the high post.
While D'Antoni had faith in him, I don't feel Diaw was used properly.