If Alan leaves 2GB (which I can’t see happening…cutting back to four days per week seems more likely ala Kochie on Sunrise), I think Steve Price is the most likely to take the spot, at least at first. It has struck me as intriguing that Steve is the only fill-in who does not stick to the format (restrict calls to the 6:30 and 8:30 half hours, sport and finance crosses before the top of the hour etc). It has made me wonder if he is trialling a succession plan.
Longer term I’m sure Nine would like to lure Jason Morrison back to 2GB, and deprive Seven of their Sydney news director in the process. He is one of the few who have proven they can retain the audience during Alan’s absences. If memory serves, Jason actually increased the ratings when he filled in for one of Alan’s extended absences some years back.