All this hype is media stuff, you don't drop him or get hysterical and punish him. I agree with moving him out of 5/8 because he's too erratic now and it's not worth sticking with it, but I'd definitely have him somewhere in the 17 and probably at centre.
Players understand it's a business, luai got on with winning a premiership at Penrith last year, DCE isn't playing any less quality even though he's leaving under acrimonious circumstances. They'll get on with playing.
If Galvin starts to drop in form or creates drama you just drop him. This isn't a crisis, or a mess, a player has just decided to go for more money elsewhere...all good, let's get back to footy.
The one thing I don't think we can do is release him. His whole intent will be to get another club next year to earn big dollars. If we let him go, we continue to show we're a pushover club who isn't serious.