Victor Diaz already trained on Wednesday at the same pace as his teammates, although it was not until this Thursday when he was discharged after missing the last match against Valencia due to a fracture in the lumbar transverse process.
His team-mate Germán hadn't been training with the group all week due to a muscular contracture from which he has also recovered.
Both defenders are undisputed starters for Granada manager Diego Martinez and are expected to be part of his team's starting XI in their home match against Atlético.
The only Granada player who remains out, according to the medical report offered by the club, is Colombian central defender Neyder Lozano, who is recovering from a fissure in the tibia suffered in pre-season.
Granada will complete their preparation for the match against Atlético with training, also behind closed doors, scheduled for this Friday in their training centre.