Mention Giancarlo Stanton and general managers drool. What would it take for the Miami Marlins to part with him? Everyone has a price, right? Marlins GM Dan Jennings digs in and swears Stanton is not for sale. Jennings said as much on Sirius/XM radio with Jim Bowden in the offseason. As we spoke in Jupiter, Fla., last week, Jennings said, “Only one team has called us on him.” Jennings wasn’t willing to name that team, though the Philadelphia Phillies have been openly lusting for Stanton for some time. To change the atmosphere around a team that won just 62 games last year, Jennings added veterans Jarrod Saltalamacchia, Garrett Jones, and Rafael Furcal to a talented young core that includes the 2013 NL Rookie of the Year, pitcher Jose Fernandez, and outfielder Christian Yelich and shortstop Adeiny Hechavarria. Over Stanton’s four major league seasons, the Marlins have gotten worse, not better. The 6-foot-6-inch, 240-pound righthanded slugger with the V-shaped physique has heard his time in Miami would be limited since he first came up and started hitting 30-plus homers in 2011. The feeling has always been that the thrifty Marlins won’t pony up the money to retain him. Jennings is resisting that notion with every bone in his body. There has been no trade proposal even remotely tempting enough to move the 24-year-old superstar.