Madrid, July 29 -- Sevilla has completed its fifth signing ahead of the new La Liga season with the arrival of Spain under-20 international left-back Julio Diaz from Atletico Madrid.

Diaz follows Arouna Sangante, Juan Iglesias, Jon Guridi and Odysseas Vlachodimos, whose loan move has been made permanent, after the southern Spanish club paid Atletico one million euros for 50 percent of the player's rights.

The defender has signed a four-year contract through June 2030, although Atletico has retaineda buy-back option.

Diaz spent the past two seasons with Atletico's B team, while also making four first-team appearances under Diego Simeone. His arrival at Sevilla will raise further doubts over thefuture of Joaquin Martinez Gauna, better know...