Arsenal travel to Bulgaria to take on Ludogorets this evening, and while the old cliche that there are no easy games in the Champions League is true, should really be winning against their opposition.Having trounced them 6-0 at the Emirates a fortnight ago, the Gunners must be mindful there's a certain North London derby to contest on the weekend.So, ever the divisive, Arsene Wenger's decision to include star duo Alexis Sanchez and Mesut Ozil has had the fans talking on Twitter.With both men so key to Le Prof's setup, many fans are questioning the decision to risk arguably the two best players at the club.Though Arsenal have started the campaign in good spirits, any injury either pick up this evening in Eastern Europe really is likely to cause a further storm ahead of Spurs' visit to the Emirates on Sunday.For their part, a certain Harry Kane is looking likely to return in time for the crunch meeting, making the need for both Ozil and Sanchez all the more pressing.