Takehiro Tomiyasu has managed only six minutes of action this season following a knee injury and his return date remains unclear. Ben White underwent surgery on a knee problem back in November and Arteta has hinted he could return towards the end of January.

Arsenal's defensive stalwart William Saliba is set for a spell on the sidelines after Sunday's medical checks revealed a hamstring issue, ruling him out for a crucial fortnight. The Frenchman missed the recent draw with Aston Villa, and in his absence, Jurrien Timber stepped up to fill the void at centre-half.

William Saliba missed Arsenal's dramatic draw with Aston Villa as Mikel Arteta sweated on his injury diagnosis with the defender due to be sidelined for several weeks

Arsenal's defensive worries continue as Saliba faces a spell on the sidelines. Will he return in time for the crucial clash against Manchester City?

Not for the first time, Arsenal felt the impact of being without William Saliba as they blew a two-goal lead at home to Aston Villa. The French defender missed Saturday’s 2-2 Premier League draw due to a hamstring injury and Mikel Arteta admitted after the game that he is “worried” given Arsenal’s lack of defensive options.

Mikel Arteta says William Saliba was ruled out of Arsenal’s Premier League fixture against Aston Villa due to a muscular injury. Saliba, 23, was missing from the matchday squad for Saturday’s 2-2 draw,

William Saliba won't play for Arsenal against Aston Villa as the injury concerns for the Gunners and Mikel Arteta continue.

Chelsea appear to have dented Arsenal's hopes of finding a replacement for William Saliba, who was forced to miss the Gunners' clash against Aston Villa. The 23-year-old defender was omitted from the squad after he was seen holding his hamstring towards the end of the North London Derby.

Mikel Arteta has admitted he is "very worried" about William Saliba's injury after the Arsenal defender missed Saturday's 2-2 draw against Aston Villa on Saturday.

Arsenal's squandering of two Premier League points in Saturday's 2-2 draw with Aston Villa was compounded by concerns about an injury to defender William Saliba that ruled him out of the game. Saliba was not even in the squad after suffering a hamstring injury in the 2-1 victory over Tottenham Hotspur in midweek.