https://cdnph.upi.com/ph/st/th/7751786121511/2026/upi_com/38dea47766ea6e4bf13d67d17511c9c7/v1.5/Real-Madrid-teen-Franco-Mastantuono-goes-on-loan-to-Fiorentina.jpg" /> Fiorentina signed Argentine teen Franco Mastantuono to a season-long loan from Real Madrid, the Italian Serie A soccer franchise announced Friday.