Listening to the Dan Patrick show this AM. Albert Breer was asked, who is the hottest coaching candidate this offseason. He said, the most sought after coach is coaching this weekend - John Harbaugh.
I think it is clear (based on the reports from our FO before the LAC game) that Steve wants him back and would like to work out an extension. So this move is only possible if John would want out. Who really knows if there is any credence to this speculation, or if it is just fun for analysts to talk about it.
I had thought the only way he'd leave is if there is some unreported rift between John and Eric. Breer mentioned a similar, but slightly different possibility and that is one of control. Steve (like any reasonable owner) will likely want his HC to have input on personnel decisions, but that the GM has the final say. That would not constitute a rift between he and Eric, but would be an organizational limitation. If John wants a level of control beyond that, I think we will - and should - part ways. I don't want a HC/GM. That model does not seem to work IMO.