The Marlins are expected to hire Jorge Posada as a special adviser to the club's baseball operations department.
The Marlins gathered for the first time to greet fans on Saturday wearing new uniforms.
The Marlins will receive Jorge Alfaro, pitching prospects Sixto Sanchez and Will Stewart, and an international bonus slot.
If the Phillies are going to acquire J.T. Realmuto from the Marlins, they are going to have to include Sixto Sanchez in the deal.