The Marlins released Morel on Friday, Isaac Azout of FishOnFirst.com reports.
Morel was outrighted to Triple-A Jacksonville after clearing waivers Thursday, but the organization has now decided to part ways with him entirely. The 27-year-old outfielder slashed .162/.219/.206 across 73 plate appearances with Miami, but he should still be able to attract a minor-league deal in free agency.