I think Milford will be a Bronco next year
He almost certainly will be, short of Raiders starting exceptionally well, Milford's family deciding they really like Canberra and Milford really connecting with Stuart on a Player-Coach level he's not back flipping (all three scenarios very unlikely on their own, let alone all three together imo), but it doesnt change the fact that it is still an option available too him if he wants it.
Unless the Raiders agreed to removed their last chance rights to him, a raiders fan emailed the NRL and it was made quite clear all parties had to agree before it would be removed and registered and i can't think of a single reason why the Raiders would agree to that.
The reality is these articles are more likely driven from within the Broncos camp, by people looking to try and get the coach sacked.