By Nick Teale
Sol Campbell does not start at the Nou Camp tonight.
The defender had been struggling with a hamstring problem and Arsène Wenger has not deemed him fit enough to start against Barcelona.
However Tomas Rosicky, who was rated as 50:50 to make the clash, does start.
Gael Clichy, Abou Diaby and Samir Nasri return having been rested against Wolves on Saturday.
Arsenal team in full: Almunia, Sagna, Vermaelen, Silvestre, Clichy, Denilson, Diaby, Nasri, Rosicky, Walcott, Bendtner
Substitutes: Fabianski, Campbell, Traore, Eboue, Eastmond, Merida, Eduardo