A day after GM Kevin Towers said that he would be open to trading young outfielder Justin Upton, teams have come calling.

Initial reports are that the Rockies, Marlins and Red Sox are all interested in dealing with Towers, although the GM’s asking price is believed to be ridiculous. It may take up to four or five prospects to move Upton, but teams have already started kicking the tires on a potential deal.

FOX Sports’ Ken Rosenthal has been all over the Upton trade rumors thus far. He’s reporting that the Blue Jays are showing “strong interest” and that the Mariners could construct a deal centered around pitching prospect Michael Pineda.

While the Rockies are believed to have inquired about Upton, Towers is determined not to trade the outfielder within the NL West. That means Colorado, Los Angeles, San Diego and San Francisco are out of luck. Atlanta is probably out as well after acquiring Dan Uggla for a paint-by-numbers coloring book and a half-eaten turkey melt.

Talks between Towers and the Red Sox have apparently cooled, but Boston is showing more interest than the Yankees at this point. Arizona is looking for at least four prospects in return for Upton and aging teams like New York are reluctant to part with that many farm players. Still, if the Red Sox are interested, the Yankees are interested (even though the Bombers may have no place to put Upton in their outfield).

Much like the Cliff Lee situation, new rumors will surface daily about where Upton may wind up. It’ll be interesting to see how this story unfolds over the next couple of weeks.