I've always found the DCE's missus is from Manly so she won't want to leave as hardly a rock solid reason. Sure she might not want to leave, or maybe she does, maybe she wants to explore the world, maybe she is the one who is pushing him to take the biggest pay deal? I have no idea but it seems just a valid reason as saying she doesn't want to go without anyone knowing for sure. And even if she did want to stay she wouldn't be the first person who decided to follow her partner for their career.
I also heard a rumour that DCE's parents have recently moved to the GC. That might be a factor, then again it might not.
One thing that wouldn't surprise me though is the NRL seeing DCE as someone who they could use to rebuild the team on the gold coast. He's a clean skin, media friendly and someone who might help get bums on seats. If I was in charge of trying to save that team I'd pay whatever it takes to get him.