This window has scrambled my head a bit I think, I can't wait until the football starts so I can clear it all up.
Also if I were to be spending some significant money on a keeper, as in a proper long term head and shoulders above anyone else keeper.... First I think I would do it in a summer after a good finish in the league so I could attract someone people like Onana might be obtainable if he still hadn't moved and we finished in the top half in a year or two.
If i were really worried about Heaton I would take the risk on Butland for 5-7 million, after all they were keen on him a year ago.