Tomas Rosicky has replaced Santi Cazorla in Arsenal's lineup for tonight's Champions League Group F crunch match against Borussia Dortmund.
Arsene Wenger, on his 64th birthday, also reinstates Aaron Ramsey to the starting lineup in place of the missing Mathieu Flamini, who is out with a concussion.
Dortmund manager Jurgen Klopp has made three changes to the side that edged out Hannover at the weekend.
Mats Hummels, Marcel Schmelzer, and Jakub Blaszczykowski come in for Sokratis Papastathopoulos, Erik Durm and Pierre-Emerick Aubameyang.
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Arsenal: Szczesny; Sagna, Mertesacker, Koscielny, Gibbs; Arteta, Ramsey; Rosicky, Ozil, Wilshere; Giroud
Dortmund: Weidenfeller; Grosskreutz, Subotic, Hummels, Schmelzer; Bender, Sahin; Blaszczykowski, Mkhitaryan, Reus; Lewandowski
