Arsenal's defensive injury crisis is set to continue on Boxing Day with Unai Emery likely to be without as many as five players for the trip to Brighton.
Rob Holding (knee), Konstantinos Mavropanos (groin) and Hector Bellerin (calf) are definitely out, while Nacho Monreal (hamstring) will be assessed and Shkodran Mustafi (hamstring) is set to return to training this week.
Meanwhile, Arsenal have revealed that Henrikh Mkhitaryan will be out for at least six weeks because of an injury to his right foot.
Mkhitaryan suffered a fractured metatarsal in last Wednesday's 2-0 League Cup defeat to Tottenham and was replaced at half-time.
Arsenal have now revealed the extent of the injury with the Armenian playmaker not due to resume full training for six weeks.
Provisional squad: Leno, Cech, Martinez, Jenkinson, Monreal, Lichtsteiner, Koscielny, Papastathopoulos, Medley, Maitland-Niles, Xhaka, Elneny, Torreira, Guendouzi, Ramsey, Iwobi, Ozil, Saka, Lacazette, Aubameyang, Nketiah.
Scroll through Arsenal's full injury and suspension list in the gallery above...
