#3 Arsenal's defensive crisis
Arsenal are expected to be without Granit Xhaka, who has a groin strain. Olivier Giroud and Aaron Ramsey are doubts while Sead Kolasniac, Nacho Monreal, Laurent Koscielny and Santi Cazorla are long-term absentees.
Arsenal's expected back-line of Mustafi, Chambers and Holding is inexperienced and suspect to costly errors. Holding had a nightmare against Nottingham Forest and Mertesacker is too slow to be effective against Chelsea.
Wenger is short of reliable cover for his defence and it will prove fatal when they visit Stamford Bridge.
Edited by Shambhu Ajith