Arsenal dominated the majority of the game against Manchester United but failed to take their chances as Altay Bayindir, barring one mistake, had the Red Devils' goal on lockdown.
Arteta claimed that the loss was extremely sad for him and his players. He added: "Incredible how you don’t win that game, that’s basically to sum up. The dominance, the superiority in relation to the opposition and everything that we did to try to win the game and that’s it we didn’t get what we deserved clearly. But there is an element that is about putting the ball in the back of the net that we did once and the amount of situations chances, penalties that we had we didn’t.
"We go home extremely sad but I cannot be prouder of my players, the team, the individual collectively what they produced on Wednesday against two top teams it's incredible. But we haven’t got rewarded and that’s the downside too."