The most likely place Vlad ends up is back with the Expos (or Mexpos, all things considered). I'd be shocked if he went to KC, that ownership group simply won't put up the dollars to get him. SF is clearing an awful lot of salary next year, and might be looking for a superstar to build the team around post-Barry. Sure it's a few years ahead of schedule, but Sabean and Magowan are smart folks and may pony up the dough. That said, I haven't heard any of the Bay Area or Sacramento sports radio folks talk about Vlad ending up in a Giants uniform. (Though whether that means anything is anyone's guess.)
Vlad hasn't given that many interviews, but in the few that I've read he certainly seems to enjoy being off the beaten path. I doubt he'd sign with a NY, LA or Boston team. But hell, it's not like I've ever spoken with the man about this, so who knows?!
Personally, I'd love to see the Expos make a permanent move to Mexico. I think it'd be great for the game. There'd be a huge fan base built up very quickly, and even with the relatively weak Peso they'd probably pull in more revenue than they do in Montreal. Baseball as a whole would also likely see a big revenue increase as they grow market share in Latin America.
The New York market could support a third team. A few years ago, one of the major economic analyses of baseball concluded (among other things) that the New York area was actually the BEST place to add a club. (It may have been the vaunted Blue Ribbon panel - does anyone else recall such a thing?) The club wouldn't be put in Brooklyn or Manhattan, though, but in New Jersey. Not being from the area, I have no idea whether NJ folks would quickly take to the Expos or not. I think NJ is a dark-horse candidate to be the new home, although Steinbrenner would put up the biggest bitchfest in the history of the country. To shut him up they'd probably have to give him half of the Expo's annual revenue - though they'd probably still make hand over fist more than they currently make in Montreal!
More selfishly I'd like to see the Expos go to Portland. I love that city, and plan on moving there in about three years. I'd love to be able to head to a downtown stadium and watch Vlad pop those balls in the Willamette.
It'll happen, too, if the legislators can figure out how to get a MLB ballpark built...