The duo had been sidelined with ankle and muscular problems respectively and missed the recent fixtures against Olympiacos and Tottenham.
Following rehab at Arsenal, both players are now away on international duty but did not feature in Friday's Euro 2012 qualifiers. Koscielny was an unused substitute for Laurent Blanc’s France side, while Djourou was suspended for Switzerland’s 2-0 defeat at Wales.
The return of Koscielny and Djourou - along with Sebastien Squillaci - will give Arsène Wenger plenty of defensive options when Arsenal resume their Premier League campaign against Sunderland next weekend.Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 10 Oct 2011