The Gunners dominated from the start of the game and Andy Carroll's 83rd minute consolation goal could no nothing to wipe the smiles off the visitors' faces.
Alex Oxlade-Chamberlain's career hasn't quite panned out the way everyone thought it would. Is it time for Arsenal to part ways with the midfielder?
A look at the key news and stats for tomorrow night's UEFA Champions League tie
Alex Oxlade-Chamberlain scored a brace as Arsenal eased past Reading in the fourth round of the EFL Cup.
Arsene Wenger gave his verdict on the Arsenal youngsters' performances, while singling out Oxlade-Chamberlain for praise.
The 23 year old English international has expressed his dissatisfaction at his playing time with Arsenal, having started only 3 games in the Premier League this season.
Arsenal wrapped up their last pre-season friendly in the United States with a comfortable 3-1 victory over Mexican giants Chivas Guadalajara on Monday.
Just as Alex Oxlade-Chamberlain was making a return to first-team action with Arsenal after a 3 month lay-off due to a knee injury, the youngster suffered a fresh blow in training recently to effectively rule him out of the Euros.
Alex Oxlade-Chamberlain has always been highly rated at Arsenal, but has found first-team opportunities hard to come by this season due to his own issues with form and fitness as well as the emergence of Joel Campbell and Alex Iwobi.
Transfer Round Up: Bundesliga Club Want Liverpool and Manchester United Target; AC Milan Aim To Keep Mario Balotelli