Sources tell FoxSports.com that the Mets had concerns over Gomez's medical records, and decided not to follow through on the proposed deal, which would have sent Wilmer Flores and Zack Wheeler to Milwaukee.
Gomez spent time on the disabled list earlier this season with a hip injury, but he has played all but one game since June 23. However, it seems the Mets' staff did not like what they saw in the medical report.
There had been thought that the Brewers saw something in Wheeler's medical charts, as he had Tommy John surgery in March. But reports are saying it's Gomez's injury history that has nixed the deal.
Flores, who was signed by the Mets as a 16-year-old in 2007, is in the midst of his third season in the big leagues. He entered play on Wednesday with a .249 batting average, 10 home runs and 40 RBI in 92 games for the Mets. He has seen time at shortstop and second base, though he looked much more comfortable at second.
Neither team has officially announced the trade at this point.
Rojas is out with a lingering shoulder injury and will be replaced by Adeiny Hechavarria at shortstop.
Castro, who is not in the lineup Wednesday, has just one multi-hit game since July 2.
Trade rumors have been swirling around Castro, who has been reported to be a target of San Diego.
Adames has not appeared in the big leagues yet this season, but he owns a .296/.342/.416 slash line with 16 doubles and seven home runs in 86 games with Alburquerque.
Miller made eight relief appearances for the Rockies earlier this season, posting a 1.29 ERA over seven innings of work.
Laffey, an eight-year veteran, pitched 2 1/3 innings in a relief outing earlier this year. He is 2-3 with a 4.78 ERA in 58 1/3 innings with the Isotopes.
The 32-year-old Reyes owns a slash line on the year of .285/.333/.385.
The 25-year-old Castro has stagnated in recent years and is having arguably his worst season. He owns a .230/.268/.302 slash line and has been particularly ineffective recently. He has just seven hits in his last 69 at-bats.
Rojas was 1 for 2 with a walk before leaving the game. He is listed as day-to-day.