Mauri has signed a contract through the 2022 season with an option for 2023. He will occupy an international spot on Sporting’s roster pending receipt of his International Transfer Certificate and P1 visa.
Mauri, 25, holds dual Argentine and Italian citizenship and has played at the top level in both countries. He spent the majority of his career in Italy, where he competed for Parma, Empoli and Milan between 2013 and 2019. He later returned to the country of his birth, where he competed in Argentina's top flight for Talleres de Cordoba.
The versatile midfielder originally left Argentina to join Parma's youth setup in 2012 before making his debut the following year at the age of 17. He became a regular starter in the 2014-15 season, when his standout performances led to a move to seven-time European Cup winners Milan in 2015.
After making 10 appearances during his debut season, he joined Empoli on loan the following campaign before moving to Talleres, where he was a regular starter.