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Spaniard believes he was lucky to get chance to work with Gunners
24-year-old, who hit 22 goals for Lille last term, was criticised for his limp display against Man United
Manager says defensive midfielder is suited for role because of experience and maturity
The Gunners suffered a major blow in their bid to make next season's Champions League following defeat at Everton
Victory is essential after Arsenal dropped to fifth place as a result of Manchester United's 2-1 win over Watford
Mourinho blames squad for gifting Arsenal two goals in the 2-2 stalemate
Arsenal boss suggests German midfielder’s style not fit for physically demanding games
Manager understands importance of three points when hosting West Ham