Porto are determined to keen the 19-year-old in Portugal but may find themselves losing out if anyone meets Leite's €15million release clause this summer.
Liverpool is tipped as the likeliest destination given Jurgen Klopp's record with developing players and their impressive performances in Europe this season.
However, Arsenal are also allegedly interested in securing the youngster's signature while a host of scouts from other Premier League clubs watched Leite lead his team to victory over Arsenal's Under-23 on Tuesday night.
Any deal from either club will probably see the young defender loaned out next year to ensure he receives regular first-team football.