Arsenal 2-3 Borussia Dortmund: Mikel Arteta's side defend poorly but Christos Tzolis shines as Gunners lose Emirates Cup

Report as Arsenal lost 3-2 against Borussia Dortmund to suffer back-to-back pre-season losses; Dortmund were 2-0 up at half-time thanks to Samuele Inacio and Konstantinos Karetsas; Joane Gadou made it 3-1 after half-time; Ethan Nwaneri and Viktor Gyokeres pulled goals back for Arsenal