Sunday, January 13. Kick-off: 1600
Arsenal's Olivier Giroud suffered a gashed knee in the FA Cup third round draw with Swansea last weekend, and is a fitness doubt ahead of the meeting with Manchester City
About Diaby featured for Arsenal under-21s during the week and could make his first appearance for the senior side since the defeat to Chelsea in November.
The Gunners will be without Gervinho, who has joined up with the Ivory Coast for the Africa Cup of Nations - as have Manchester City's Yaya Toure and Kolo Toure.
Manchester City are also without Sergio Aguero who is missing with a knee injury, while Samir Nasri is suspended following his red card against Norwich.
Aleksandar Kolarov is fit again after recovering from a groin injury.
Wenger: We are in a vital period
Arsene Wenger has outlined Arsenal's run of fixtures against some of the Premier League's most prominent clubs as key to the Gunners' ambitions this season.
Arsenal have the task of completing six fixtures in 18 days, starting with a meeting with Manchester City on Sunday, while encounters with Chelsea and Liverpool also await.
The Gunners are unbeaten in their last five Premier League matches, and Wenger senses his side can be at their most dangerous when they face teams with similar hopes to their own.
"We know this a vital period for us," Wenger told his Friday press conference. "We are on a positive run. We still lack a bit of confidence in some situations and I feel our team will be very dangerous if we have full confidence.
"We are not far from it but we need another positive result in a big game to be completely confident and believe in our ability to come back."
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