Club Olimpo
In August 2017, Leal returned to South America, loaned for a US$150,000 fee to Newell's Old Boys in Argentina with the option to buy. He scored his first goal in the Argentine Primera División on 16 September to open a 2–0 home defeat of Club Olimpo. In July 2018, he signed a three-year contract when the Rosario-based club purchased 85% of his economic rights.