Passan in a recent article mentioned Salt Lake City, Las Vegas (already getting the A's), Nashville, Charlotte, Portland, and Montreal as realistic expansion options. My guess is that if the Rays stay in Tampa/St. Pete with a new stadium and MLB expands to two more teams, then it's going to be one of Nashville/Charlotte and one of SLC/Portland. I don't expect Montreal to ever get another MLB team, but if the Rays situation falls through then maybe they revisit that.