I honestly believe that he hasn't made up his mind yet. It's perfectly understandable for him to wait until the end of the year, let the dust settle, and have a little bit of time to reflect and consider his options. In some ways for Melbourne, this could be a good thing. When a team is performing as ours is at the moment, any given week would be a different proposition. After a win 'Fantastic, I'm staying!' after a loss 'I need to get to a finals bound club.'
Let him consider his options, talk to his family, (hopefully not his manager), talk to the club and make a decision with a clear focus.
With that said, while I believe he hasn't made up his mind yet, I think the club may believe he's likely to go. Frawley hasn't been played as a 'swing-man' since his move forward in round three. Rather, he has been well and truly parked there - rain, hail, shine. Roos is preparing the team and particularly the defense for a Frawley-less 2015.