Giroud gets his chancepublished at 18:55 Greenwich Mean Time 23 November 2016
Arsenal v Paris St-Germain (19:45 GMT)
Phil McNulty
BBC Sport chief football writer at Emirates Stadium
Arsenal manager Arsene Wenger insisted there would be plenty of time for Olivier Giroud to get his chance from the start after another goalscoring appearance as a substitute at Manchester United on Saturday.
And that chance comes tonight as he starts against Paris St. Germain in the Champions League, with Theo Walcott dropping down to the bench.
David Ospina is back as Arsenal's Champions League keeper instead of Petr Cech and Kieran Gibbs comes in for Nacho Monreal.
Gunners' boss Wenger has bolstered his midfield as Alex Iwobi comes in for Mohamed Eleny.