Spanish international Jose Antonio Reyes has signed for Arsenal from Sevilla for an unknown amount of money.
Although the two clubs agreed to keep the exact figure secret, the 20-year-old is valued at £20m, making this a club record for the Gunners.
Reyes, who has been with Sevilla since he was 15, has signed a long-term deal.
The winger said: "Without a doubt this is a step forward in my career, but I'm not forgetting that I'm leaving the club that I love with all my heart."