Arsenal have completed the signing of talented Porto midfielder Fabio Vieira.

The 22-year-old came through the Portuguese club’s youth system and has just helped Sergio Conceicao’s side win the league and cup double.

Vieira scored six goals and provided 14 assists in 27 league appearances last season for Porto, who he reportedly leaves in a deal that could reach €40 million (£34.36million).

Arsenal say the Portugal Under-21 international has signed a “long-term contract” at the Emirates Stadium, with the transfer subject to the completion of regulatory processes.

Vieira becomes Arsenal’s second signing of the summer, having last week completed the acquisition of 19-year-old Brazilian forward Marquinhos from Sao Paulo, the Brazilian team whose matches are often a great choice for betting live.

Vieira will wear the number 21 shirt in north London, with his arrival welcomed by manager Mikel Arteta and technical director Edu.