The Spaniard scored his second Premier League goal of the season after an impressive through ball from team-mate Alex Iwobi to put the Gunner's 1-0 up against the 'Cherries'.
Arsenal finally took advantage of their first-half domination in the 52nd minute when the Nigerian winger slipped through his right-back who ran free on goal and put away the shot under the body of Asmir Begovic, who couldn't prevent it from going over the line.
Watch a video of the goal here:
14 January 2018