The Gunners will need to keep these players quiet.
In one of the closest groups in the Champions League, Borussia Dortmund host Arsenal in a repeat fixture of the one that the Germans won 1-2 a fortnight ago.
That tie was extremely even and the Gunners were let down by some naivety in certain areas, so here are five stars they could do with keeping quiet this time around.
5. Kevin Grosskreutz
In the absence of regular right-back Lukasz Piszscek, the German has been filling in and doing such a good job that the Pole may find it difficult to get back into the side.
The 25-year-old is a solid defender who is less inclined to come forward but is reliable at the back and will be difficult to get past.
Grosskreutz is particularly strong at tackling and whichever attacking midfield trio Arsene Wenger decides to field could face a tough evening down the left flank.