JazzG I think Isak will get done too before the window closes.
I will add though that there has been nothing from Daniel Kristoffersson, the journalist who broke the Gyökeres transfer. If a Swedish player moves, especially someone of this magnitude, he'll know about it before any British sources. I reckon he gets his information personally from the very agents involved.
If I were Newcastle I'd keep Isak for another year too, just as a fuck you to Liverpool. They'll fuck up the scousers's entire season if the deal falls through. And what's Isak supposed to do, go on strike for an entire season? He'll play just like Rooney did, and Ronaldo, and Gerrard, etc. Soon as he scores a few goals all will be forgotten.