Arsenal are preparing for a campaign of balancing the Premier League with the Champions League in hopes of winning both. The Gunners returned to the top European competition last year but fell short after being knocked out by Bundesliga giants Bayern Munich. Mikel Arteta suffered a similar fate in the Premier League as he and his side pushed Manchester City to the finishing line, but narrowly missed out. This time around, Arsenal will be looking to go one step further but face some new challenges ahead of them. The new Champions League format means more matches and a different schedule for the…