Arteta on Tierney:
'Kieran is fine. He had a little muscular discomfort in the last few days. He tried today and worked in the warm-up but he wasn't feeling comfortable. We believed that he was going to be fit but during the warm-up, in the last 10 minutes, he wasn't feeling OK.'

— ArsenalArena (@ArsenalArena) September 20, 2020