Kolasinac has not featured in the Premier League since the 1-1 draw with Southampton earlier this month, with the club switching formations to play four at the back. "Ramsey should be back at the beginning of January", confirmed Wenger.
Santi Cazorla is also out as he continues his rehabilitation from a long term injury.
Arsene Wenger has reverted to a back three with Calum Chambers starting alongside Shkodran Mustafi and Laurent Koscielny with Nacho Monreal ruled out with an ankle injury. "We suffered a bit but for the biggest part of the game we played well". Although Aaron Ramsey has begun training again, the Welsh worldwide is still not match fit as he continues rehabilitation on a hamstring injury.
Roy Hodgson has made the Eagles tough to beat at home and will be eyeing the scalp of Arsenal to pull away from an increasingly congested bottom of the table.
Crystal Palace have won only one of their last 12 home league games against Arsenal (D5 L6), though it was a 3-0 victory in this exact fixture last season.
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Crystal Palace's James Tomkins scores his team's second gola in the 89th minute. With eight goals this season, the French global is the clubs top scorer, however, the 26-year-old has not scored in his last four appearances. Paris Saint-Germain would perhaps be a more obvious choice if the Arsenal were looking for a mid-season sale, clearly keen to avoid a sale to a Premier League rival.
Mesut Özil has had a hand in nine goals in his last 10 Premier League appearances for Arsenal (four goals, five assists).
The match is being televised on Sky Sports in the UK, while in the United States (US) Crystal Palace v Arsenal can be watched live and on-demand with fuboTV (7-day free trial).
On the occasion where he equalled Sir Alex Ferguson's record of 810 Premier League games in charge, Arsene Wenger saw his side start out with plenty of verve but their vigour was matched by the hosts.