I'll say - all of the signs publicly point to AOB sticking around but the same was being said last year until all of a sudden that wasn't the case anymore. They were actively looking for his replacement even a few weeks into the win streak. Similar story with the end of Nathan Brown's tenure, there was no real talk of him moving on until all of a sudden they announced he was going one afternoon, and AOB immediately became the heavy favourite to replace him with reports those conversations had already been happening prior.
I think if it's the Knights and it's true (both big ifs) the earmarked replacement would likely be someone they could get for cheap while they're still paying out AOB. Don't think they'd be bringing in the reigning State of Origin winning coach for example. My guess would be someone who's already on the payroll and with a known desire to test himself as an NRL head coach (after a long history of success elsewhere), two factors that I imagine would make negotiations pretty straightforward.