i dont think they intend to. the tax is just money. the aprons are where restrictions start to come into play. celtics are still in the middle of their window of contention with tatum/brown, et al. hauser is one of their most important role players and he's locked into a good deal for them. if he was about to expire or was expected to turn down some player option, then yeah by all means move him. but that's not the case. he's in year 1 of a 4 year deal that already looks like a bargain.
also for what its worth, Hauser is playing today (and starting)... doesnt seem like they'd be doing that if they were even considering moving him by thursday