Arsenal manager Arsene Wenger says young defender Calum Chambers needs to work on his positioning after being caught out and red-carded in the 3-2 defeat at Stoke City.
The Gunners went into the match at the Britannia off the back of three consecutive victories to nil and reaping the rewards of a relatively settled back four.
Laurent Koscielny’s return from injury was a telling factor, though the French international was ruled out of the trip to Stoke and Wenger was forced into another reshuffle, moving Chambers into the middle.
The summer signing from Southampton is naturally a right-back, yet due to an apparent injury crisis in North London he has featured at times in the middle and demonstrated his versatility.
Despite his admirable performances, at just 19 years old he still has plenty to learn and that showed during an inexperienced and forgettable performance against the Potters.
Aside from a first-half capitulation which resulted in a 3-0 deficit going in to the interval, Chambers’ evening got worse as he was sent off for two bookable offences in the second period.
While Wenger felt the dismissal was harsh, he also admitted that his young defender needs to work on certain aspects of his game as he analysed his team’s downfall.
"If you’re 3-2 up then you can’t get a better decision than one of the other team’s players getting sent off," Wenger told the official Arsenal website. "It was a killer.”
"Calum is an easy target because he’s not a dirty player at all. The second yellow card - compared to what happened on the pitch - was a bit farcical.”
"He’s only 19 years old and he has to learn [about positioning]. We were a bit young on Saturday at the back and defending is a job for older people.”
“Koscielny couldn’t play and then you have to play defenders who are used to the defending positions."