Figured I'd encapsulate all the info I could find together because I'm neurotic:
Pete Sampson: mentioned twice it the latest ep of his podcast that the extension was being worked on and expects it to be announced within the next few weeks. He has no expectation that MF will leave for the NFL this year.
John Brice: The Giants did vet MF starting last year, MF has not interviewed, mentioned Jay Glazer did not include him on a list of prelim candidates for the job. Extension talks have been received well by both MF and ND
Mike Frank: Giants are/were interested, Freeman had not returned the same level of interest. Does not expect him to leave
Pete B: Comments in PC regarding keeping Marcus at the top of college football in terms of compensation and commitment/alignment
Multiple mentions: Current contract has a very large buyout
Giants media/fans: Mike McCarthy seems to be the most likely/best guess. Joe Schoen mentioned that they would focus on Kafka before turning their attention to the coaching search. Most lists I have found on Giants sites include MF pretty close to the bottom as an outside darkhorse/speculative option.
He's been added to predictive markets like Kalshi, which are not driven by Vegas or insiders but rather public request.
Schefter: Mentioned MF would be one of the first coaches he would call, did not mention any openings to my knowledge.