If you want to get a jump on it, the Marlins seem poised to make some cuts to make room for young guys. They already used Jesus Sanchez's final option to try out Peyton Burdick. I fully expect Jesus Aguilar to be DFA this week to enable Lewin Diaz to get as many AB as possible for the rest of the season. I would also expect Jerar Encarnacion to get called up very soon, although he has also been playing 1B in AAA.
I wouldnt bet on guys like Berti or Brian Anderson or Soler getting many AB when they return in favor of guys like Charles LeBlanc and Luke Williams and Encarnacion. This team needs to see what they've got.