Bennett is in discussions with Marshall about the prospect of the former Kiwi Test star joining the Broncos for a one-year swan song.
The revelations fuelled rumours Hunt could be squeezed out of Red Hill to link with ex-Broncos five-eighth Corey Norman at Parramatta.
In England preparing for the upcoming Four Nations tournament, Bennett has quashed speculation Hunt could be forced out of Brisbane.
“If Benji comes to the Broncos, and that is still an if, he will not be replacing Ben Hunt or Anthony Milford,” Bennett told The Courier-Mail.