Arsenal travel to Spain to take on Villarreal in their Europa League semi-final first leg on Thursday night.
The Gunners face a reunion with former manager Unai Emery, who led them to the Europa League final two years ago, where they fell short against Premier League rivals Chelsea.
In what has been a disappointing campaign for Mikel Arteta and Arsenal, the north London club are sat in 10th place in the Premier League, with the Europa League now their sole opportunity to make the Champions League next season.
Arsenal put in one of their performances of the season against Slavia Prague to reach the final four, while Villarreal overcame Dinamo Zagreb - who previously knocked out Tottenham - to progress to the semi-finals.