Narvaez will probably leave on loan after preseason and Sanabria is in the process of getting Spanish passport so they could open at least one non-EU spot soon. Don't know if they are really interested in Marlon though as they probably prefer someone more experienced. I've read they are considering Diego Reyes (ex Sociedad and Espanyol) who is currently a free agent but he's just their plan B if they won't get their first target (don't know who this could be).