Mastantuono, just 17, joined Real this summer from River Plate. His maturity and quality have helped him get a place in the senior squad. Real have earlier promoted talents like Vinicius Jr and Arda Guler while they were still young, and the ritual has continued with the Argentine as well. The manager has said that he has found him to be self-confident, mature, and someone with a desire, and that he will soon integrate into the team.