Arsenal manager Mikel Arteta has admitted the club wants to sign another defender after his side lost 3-2 to Borussia Dortmund in the Emirates Cup final.

Speaking after the pre-season defeat, Arteta said Arsenal had conceded “some poor goals” but stressed that improving defensively remained a collective responsibility.

“We conceded some poor goals today in the way we competed, especially. But that’s a very collective responsibility. So we need to improve with the players that we have. And we want to improve, for sure, we want that,” a Sunday release on the club website said.

Asked whether Arsenal would like to sign a defender, Arteta said the club was looking to strengthen the squad.

“That’s what we’re trying to do. It has to be the right player in the market to make us much better. We are very much looking forward to that.”