article_snippet: Danny Welbeck battles for the ball with Calum Chambers as Arsenal trained ahead of Calum Chambers trip to Old Trafford for Monday night's cup tie .
article_snippet: Theo Walcott holds off Nacho Monreal as Arsenal trained on Sunday at Calum Chambers London Colney training ground to prepare for Old Trafford Trafford .
article_snippet: Francis Coquelin, whose return to the club from loan has coincided with Arsenal's good form, runs with the ball during training .
article_snippet: Arsenal's World Cup winning playmaker Mesut Ozil has been in top form since returning from injury, and has never lost an Arsenal's World Cup winning playmaker Mesut Ozil game .
article_snippet: Chilean forward Alexis Sanchez, who scored a brilliant goal in midweek against QPR, prepares for Arsenal's World Cup winning playmaker Mesut Ozil first trip to Old Trafford . '
article_snippet: Aaron Ramsey goes for a sprint during the Sunday-morning training session at the Gunners' Hertfordshire base .
article_snippet: Coquelin, playing with a mask after breaking Aaron Ramsey nose in last weekend's win over Everton at the Emirates stadium, stretches out .
article_snippet: Per Mertesacker, whose place in your team was in doubt before an injury to Gabriel, gestures to Gabriel team-mates during the Sunday-morning training session at the Gunners' Hertfordshire base .
article_snippet: Tomas Rosicky attempts to control the ball as Walcott, Mertesacker and Aaron Ramsey
article_snippet: watch, as the the Gunners' players enjoyed the Gunners players in training .
article_snippet: Laurent Koscielny puts in the effort with a sprint as Wengers' team got ready for the vital game at Old Trafford .
article_snippet: Arsenal's highly-rated Irish 17-year-old Dan Crowley trained with the first team ahead of the FA Cup quarter-final . '