He hasn't been traded YET, but he will be, because that's what the owner wants and he's the one signing the checks.
No, he's not available because he demanded a trade, he's available because the owner wants him traded. If Thibs was calling the shots, or if the owner and Thibs were on the same page, they'd be doing everything possible to placate Jimmy and make him happy in MIN, but they aren't, they are shopping Jimmy for the best offer. If Thibs was calling the shots, he would be entertaining offers for Andrew Wiggins, not Jimmy Butler.
BNM