Overview

• Gabriel Magalhães was taken off in the second half of the Olympiacos win after a collision with goalkeeper David Raya, with Cristhian Mosquera finishing the game.
• Mikel Arteta said he is not too concerned and will decide Gabriel’s involvement after Friday’s training session.
• Piero Hincapié will miss the West Ham match and is expected to be available after the upcoming international break.
• Longer-term absentees Kai Havertz, Noni Madueke and Gabriel Jesus remain unavailable for selection.
• Gabriel’s potential return would reinforce Arsenal’s central defense, where he typically partners William Saliba.