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Arsenal defender Piero Hincapie was not spotted in today's training session due to a groin problem.
The Ecuador international sustained the injury earlier this month. Arteta described the concern as a minor one at that time.
He has been sidelined for the last few games, and the manager has confirmed that he won't be available tomorrow.
The former Bayer Leverkusen man was a surprise signing before the transfer deadline and has made just one appearance.
He came on as a late substitute against Athletic Bilbao in matchday 1 of the Champions League earlier this month.
Arsenal host Olympiacos in the Champions League on Wednesday and they will be without Hincapie for the game.
Despite this, the Gunners have sufficient depth in the defensive positions.
William Saliba should partner Gabriel Magalhaes in central defence, having come on as a second-half substitute against Newcastle United last weekend.
Saliba was initially on the bench due to an ankle issue. Cristhian Mosquera started at St James' Park, but he is expected to drop to the bench tomorrow.
Written by Sri Aswin
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