The A's are the x-factor. They could re-up with Nashville at any time. If they make it to the open negotiation window, I expect Vegas will push hard for them (LV is said to want a West Coast team after years with the Blue Jays and Mets, and the A's are the only realistic fit in that scenario). I'm sure there's already been some under-the-table contact with Vegas reaching out and recruiting Oakland. But Oakland staying with Nashville is still a possibility if the relationship is solid. They may be wary of the terrible pitching environment in Vegas, and they've already spurned Fresno once, so no reason to expect they've changed their minds this time around.
With the Twins and Rochester re-upping yesterday, the International League is locked out (only Syracuse and Scranton remained unsigned). Cross your fingers for Nashville...