Porto have announced the transfer of Fabio Vieira to Arsenal on a deal worth £38million.
An initial fee of £34m will be paid with a further £4m in add-ons to come. The 22-year-old was one of the standout players in Portugal last season, bagging a combined seven goals while registering a very impressive 15 assists, 14 of which came in the league - that was more than any other player.
A statement from the Portuguese club said: "Futebol Clube do Porto - Futebol, SAD, under the terms of article 248 n1 of the Securities Code, hereby informs the market that it has reached an agreement with Arsenal FC for the assignment, on a definitive basis, of the sports registration rights of professional football player Fabio Vieira for 40M (forty million euros), of which 5M (five million euros) are dependent on the achievement of sporting objectives.