![Martin Keown says Arsenal boss Mikel Arteta was outsmarted by Unai Emery](https://cdn.newsserve.net/ONPglobe256.png)
Martin Keown says Arsenal boss Mikel Arteta was outsmarted by Unai Emery
Arsenal were knocked out of the UEFA Europa League at the semi-final stage on Thursday evening following a goalless draw with Villarreal at the Emirates Stadium
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