The defender trained in front of the media at London Colney on Tuesday, but Arsenal are expected to be cautious over his return after almost five months out.
Former Arsenal striker Yaya Sanogo dropped in on Tuesday's session at London Colney, the same morning William Saliba returned to first-team training before the Champions League trip to Slavia Prague.
Declan Rice says Mikel Arteta told him he can still offer more to Arsenal, after the midfielder set up Kai Havertz's winner at Liverpool on Sunday.
A solid victory at the Emirates saw Arsenal level on points with Manchester City, yet a light issue for Riccardo Calafiori and a scare for Gabriel Magalhães raise questions ahead of the Carabao Cup tie.
The latest Arsenal stories from other outlets. Links open on their site.
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