I think the way the C's get Asik is through a sign and trade for Ray Allen. I think they both will be getting similar ranged contracts, and each of them fill a need for the team trading for them.
The question will be whether Ray will want to go to Chicago with Rose being a questionmark to return next year...but he may consider it, if they will pay him, and give him the starting job. And Thibs can probably sell him pretty well.
What I would do is try to sign and trade Ray to Chicago, with Asik coming back on say, a 3 year/ $18 million deal.