Arsenal defender Nacho Monreal has joined LaLiga side Real Sociedad on a two-year deal.

The Spanish left-back, 33, has played in all three of the Gunners' Premier League games this season and captained the team against Burnley.

He made 250 appearances for Arsenal, scoring 10 goals, after joining the club from Malaga in January 2013.

Manager Unai Emery said on Thursday that he could leave before the European transfer windows shut.

Monreal won three FA Cups during his time with Arsenal and helped them reach last season's Europa League final.