Arsenal are probably going to need all their star players if they are going to eliminate Barcelona from the Champions League over the two legs.
Arsene Wenger cannot afford to be without his key players and will be urging Mesut Özil, Joel Campbell and Olivier Giroud to be on their best behaviour considering all three are one booking away from a suspension.
The Gunners do not have the best disciplinary record against Barca. Gilles Grimandi was sent off for an elbow on Pep Guardiola in in 1999, Jens Lehmann was given his marching orders in the 2006 and Robin van Persie was shown a red card five years ago.
Barcelona have only received a red card once against Arsenal and he happened to be a former Gunners star – Cesc Fabregas back in 2010.
Özil does have a pretty impressive disciplinary record having been shown a yellow card just four times all season. The World Cup winner has only been booked seven times since joining the Gunners in 2013 and has never been sent off.
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