Arsenal defender William Saliba continues to struggle with a back injury.
The France international has missed training this week and is set to be absent from the weekend derby against West Ham.
Saliba, 22, had started all of Arsenal's Premier League games this season before suffering a back injury in their Europa League defeat by Sporting CP last month.
He has since missed their last three matches, with Rob Holding stepping in to partner Gabriel at the heart of manager Mikel Arteta's back four.
Indeed, Arteta is calm about the situation and won't rush Saliba's return given the form shown by Holding.