The Athletics have sufficiently burned their bridges in Oakland so they're looking for a minor league ballpark to play in until their new stadium is built in Las Vegas. Right now the focus seems to be on a 7500-seat stadium in the suburbs of Salt Lake City.
Oakland A’s Las Vegas move could include stop in Salt Lake City | Athletics | Sports (reviewjournal.com)
We could see the A's get out-drawn by a AAA team in the same city. This is, frankly, embarrassing for major league baseball. It would make more sense to me to play in a spring training facility and relocate a minor league team for a couple years rather than having big league teams play in a minor league park. Another option that makes sense is playing at the site of the College World Series in Omaha.
They're still looking at Sacramento, which has one of the larger AAA stadiums (15,000 seats) and a fairly decent contingent of A's fans. That would be my preference but I don't have a dog in this fight.