Arsenal have been handed a blow to their hopes of welcoming William Saliba back after the defender missed training on Tuesday.
The Frenchman has been absent for several weeks now after suffering a back injury in the Gunners' Europa League exit to Sporting CP. Saliba was forced to withdraw from the France national team in last month's international break and has missed the past three Premier League games.
In his absence, Arsenal have not managed to keep a single clean sheet. Rob Holding has deputised for the 22 year-old alongside Gabriel Magalhaes but did concede a penalty in the 2-2 draw with Liverpool.