IMO Burton will be at Belmore the week before Christmas.
The fact that Baz and Hill have publicly stated we want him here, and we have left cap space for him, is an indication
The fact that Penrith have gone from a "definite no" to "OK we'll release him if our conditions are met" is another indication
Finally, the fact that we're negotiating for an early release (according to Assassin) means Burton wants to leave otherwise he (or his manger) would have told us he wants to stay at Penrith in 21 as I can't imagine we would be negotiating for an early release without his permission
Unless Penrith's demands are outrageous, he'll be here for his first week of preseason just before Christmas. Hopefully JAC is here too (on loan)