The 20-year-old has signed a three-year contract with Everton.
Everton have agreed a fee of around £500,000 for the Portugal Under-20 international.
Silva scored 15 goals in 32 appearances for Aves last season.
The 20-year-old has signed a three-year contract with Everton.
Everton have agreed a fee of around £500,000 for the Portugal Under-20 international.
Silva scored 15 goals in 32 appearances for Aves last season.
