Porto have completed the signing of Arsenal goalkeeper Pedro Virginia.
The Portugal youth international joined the Gunners in 2016 from CB Albufeira and returns home on a free agent.
Virginia has signed a deal with Porto to 2023. The 16 year-old is a Portugal U17 international.
He said, "It was a very good experience in England.
"It was a great four years with a great team, but now I came to FC Porto, a super team, one of the best in Europe, and I am very happy."