Call me crazy, but if Giannis isn't an option I would consider dangling White in a package for either Durant or AD. Or someone similar that's disgruntled and could be had without giving up Jaylen. Now if Giannis requires Jaylen instead of White, then I'd heavily consider it if the C's lose tonight. But if Giannis isn't an option, I think all options with White have to be on the table and the C's will need to change something up or try something. Running it back with everyone + Mazzulla all together would be malpractice. They need a frontcourt upgrade as well, and despite his insane injury history AD might be one of the more realistic guys available via trade.
And yeah, I expect Mazzulla will be back even if they lose tonight. They'll probably say they didn't have Tatum most of the year and the roster talent wasn't as good enough so he'll get a lifeline for that. His seat could become warm but that's about it. White/Jaylen and others will definitely be on the block especially if they lose tonight