Arsenal's Thomas Partey celebrates scoring their second goal during the Premier League match against Aston Villa at Villa Park. Photograph: David Davies/PA Wire Aston Villa goalkeeper Emiliano Martinez has confessed that he was caught off guard when he realised he had conceded a shot from Arsenal's Thomas Partey, "one of the Premier League's top midfielders". Partey's strike sealed a 2-0 victory for the Gunners, maintaining their perfect start to the season. In a tightly contested week two clash at Villa Park, Leandro Trossard, who came on as a substitute, made an immediate impact by scoring with his first touch, putting Arsenal ahead. Ten minutes later, Partey added a second, capitalising on a costly error from Martinez.