Arsenal said scans revealed only "bruising and soft tissue swelling" to Koscielny's face and jaw, giving manager Unai Emery the option of picking him amid a defensive injury crisis.
Sokratis Papastathopoulos, who injured his ankle against United, will be sidelined until the end of the month while Rob Holding and Hector Bellerin are out for the season with knee injuries. Stand-in full back Ainsley Maitland-Niles' right knee will be assessed ahead of the trip to Manchester.
(Reporting by Rohith Nair in Bengaluru; Editing by Peter Rutherford)
