Arsenal's Leandro Trossard, right, challenges for the ball with Luton Town's Fred Onyedinma during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.
Arsenal's manager Mikel Arteta reacts during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.
Arsenal players celebrate after Arsenal's Martin Odegaard, second right, scored his side's opening goal during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.
Arsenal's Martin Odegaard celebrates after scoring his side's opening goal during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.
Arsenal's Martin Odegaard, left, celebrates with Arsenal's Kai Havertz after scoring his side's opening goal during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.
Arsenal's Leandro Trossard, left, challenges for the ball with Luton Town's Fred Onyedinma during the English Premier League soccer match between Arsenal and Luton Town at the Emirates Stadium, London.