Arsene Wenger has confirmed that Granit Xhaka will not take part in Arsenal's Europa League quarter-final second leg at CSKA Moscow.
The Switzerland international is out because of illness, while striker Pierre-Emerick Aubameyang is once again ineligible.
Henrik Mkhitaryan and David Ospina will also be absent, but Laurent Koscielny is expected to take part in the game at the VEB Stadium as the Gunners seek to protect their 4-1 first-leg lead.
"Xhaka is not here because of flu," Wenger told reporters. "Aubameyang of course has not travelled, Mkhitaryan and Ospina.
"Koscielny is OK, we are being careful with him, I have been resting him a little bit when we've been playing three times a week but there's no new problem. He will play tomorrow night."
Arsenal go into Thursday night's game on the back of six successive wins in all competitions, but CSKA have lost just two of their last 11 home matches.
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