Kieran Tierney injury leaves Mikel Arteta with Arsenal dilemma after Nuno Tavares blast

Kieran Tierney injury leaves Mikel Arteta with Arsenal dilemma after Nuno Tavares blast.

KIERAN TIERNEY has been ruled out for the rest of Arsenal's season, leaving Mikel Arteta with a huge decision to make as to who fills in at left-back.

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