Arsenal head coach Mikel Arteta talks about how the injury of defender Kieran Tierni will affect the team.

23-year-old Scottish footballer injured knee ligaments and will miss 4 to 6 weeks.

" We have no other players with such qualities.. We would have to go for big permutations, but without time for training it would be too dangerous..

We'll find other ways to make up for this loss.

This is the reality. It is necessary to change something and find new techniques in the attack. At the same time, the structure of the game in defense must remain stable, "

Recall that earlier Arsenal defender David Luis suffered a knee injury and was retired indefinitely.

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