During the 1957–58 season, the 21-year-old Sívori was signed by Italian club Juventus after being spotted by Renato Cesarini. Juventus paid 10 million pesos (the equivalent of £91,000) for the transfer, which was a world-record transfer fee for the time. Sívori's move would prove bad for River's league fortunes, in the 18 years after 1957 they were unable to win the league in Argentina. However, they were able to complete their" El Monumental" stadium (previously nicknamed the horseshoe) by adding a fourth stand bearing his name, with the money from the deal.