Stanton has a full no-trade clause, which is one of the factors impacting a potential swap.
In October, Clark Spencer of the Miami Herald reported the Marlins' new ownership—which includes former New York Yankees shortstop Derek Jeter—is looking to trim the team's payroll from last season's $115 million to close to $90 million.
Trading Stanton would help Miami immensely in the payroll department, but it apparently isn't looking to simply give him away for the financial relief.
Buster Olney of ESPN noted, "Some rival execs view the Marlins' prospect asking price for Giancarlo Stanton as shockingly high and somewhat out of touch with reality and not discounted nearly enough given the whopping $295 million he's owed (with the forthcoming out clause after the 2020 season)."
Stanton will be expensive for the Dodgers or any other pursuers, but they will also land a 28-year-old power hitter who drilled a league-leading 59 home runs with 132 RBI and a slash line of .281/.376/.631 in 2017.
Just because the Dodgers are reportedly in the mix, though, doesn't guarantee he will be playing in Los Angeles next season. Andy McCullough of the Los Angeles Times pointed out "there is a significant gap between the Dodgers engaging in preliminary discussions with Miami and the Dodgers acquiring Giancarlo Stanton."
If they were to trade for him, they could dip into a farm system Jim Callis of MLB.com noted was the sixth-best group in all of baseball before the 2017 campaign and the 10th-best in a midseason update.