It was all part of a wild 45 minutes for Calafiori, which was not in keeping with the tame game. Inside three minutes he was booked. He had a penalty shout waved away after Callum Hudson-Odoi went down.
Calafiori was also playing almost as a striker when Arsenal had the ball, pushing right up alongside Merino. Desperate times and all that.
Arteta hooked Calafiori at half time, perhaps unwilling to play with 10 men for the sixth time in the Premier League this season, and on came Kieran Tierney.
