I don't want Antoine back, but considering that he'll get a buyout, he should be affordable at the vet min, or somewhere around that. I still think we have plenty of roster spaces to fillup, and I think he can be somewhat useful off the bench.
I don't know, but we could really punish people by going really big with 'Toine at the SF. I think it's worth the risk, given how little he'd cost us. He was coming off the bench for Miami, and ate the bench in Minnesota, so he should be a very good teammate and willing to compromise. He shouldn't have too much problems playing spot minutes.
And with that said, even though I've never liked him shooting 3's, with this team, I think it would be welcomed.
Then you consider KG's interior passing... someone like Walker could benefit a lot from it.