MIAMI -- Finding a trade match for All-Star catcher J.T. Realmuto has consumed much of the Marlins' attention and fueled plenty of trade speculation throughout the offseason.
But Realmuto isn't the only order of business for Miami's front office. It is continuing to field calls on some of its other more established players and is open to making deals before Spring Training gets rolling in mid-February.
MLB.com looks at five Marlins who could be potential trade targets, and the likelihood that they may be moved before pitchers and catchers workouts get underway on Feb. 13 at the Roger Dean Chevrolet Stadium Complex in Jupiter, Fla.
RHP Jose Urena
Several teams have checked in on the availability of the 27-year-old right-hander, but it would take a huge haul in return for Miami to consider trading its ace. Urena is the closest established player on the roster to being considered "untouchable." At least, for now. Urena projects to be the Opening Day starter for the second straight season, and he is entering his first year of arbitration. Last season, Urena paced the club in starts (31) and innings pitched (174). After a slow start, he finished 9-12 with a 3.98 ERA. In September, the hard-throwing right-hander went 5-0 with a 1.20 ERA.

2B Starlin Castro
Miami is open to dealing the four-time All-Star second baseman, but there isn't any serious interest in the 28-year-old at this point. The trade and free-agent markets have several second-base options, and then there is the issue of his salary. Holding back any potential deal for Castro is the $11.857 million he will make in 2019. Perhaps by the July 31 non-waiver Trade Deadline, something may change. The Marlins are preparing for Castro to be their Opening Day second baseman. Frankly, his production will be needed. He had a solid '18, hitting .278/.329/.400 with 12 home runs, 32 doubles and 54 RBIs.

RHP Dan Straily
It's more likely than not that Straily will be with the Marlins at the start of Spring Training, but it isn't guaranteed. Teams have reached out to Miami to measure the asking price for the 30-year-old right-hander, who has been steady and dependable for several seasons. Straily made $3.375 million in 2018, his first arbitration season. Because he is affordable, teams are interested. Straily dealt with some injuries early and late last year. He made 23 starts, going 5-6 with a 4.12 ERA in 122 1/3 innings. In '17, his first year with Miami, he went 10-9 with a 4.26 ERA in 33 starts and 181 2/3 innings.

3B Martin Prado
Staying healthy has been an issue for Prado, and it is a reason why there is limited interest in the 35-year-old third baseman. Prado appeared in 54 games in 2018, as he dealt with left hamstring and left quad strains, and a strained right oblique. Prado is signed for one more season at $15 million, which diminishes the chances he gets dealt before July. If healthy, Prado would provide an inexperienced Miami squad with a big lift.

LHP Wei-Yin Chen
Unless the Marlins are willing to attach Chen's contract to, say, any Realmuto talks, look for the left-hander to remain in Miami. And there are no indications the Marlins are willing to water down Realmuto's return. Chen is set to make $20 million in 2019 and $22 million in '20, and his contract has a $16 million conditional player option for '21. The Marlins are likely to be dealing with Chen's salary for a few more years. What's encouraging is the 33-year-old rebounded from injury-plagued '16-17 seasons, making 26 starts and throwing 133 1/3 innings. He combined to throw 156 1/3 innings in the previous two seasons.