Thomas Partey is set to return for Arsenal on Thursday night ahead of a crucial run of games which could propel Mikel Arteta's side back into a race for the Premier League's top four.
But the Gunners are set to lose highly-rated striker Folarin Balogun, who is in talks with a number of overseas clubs over signing a pre-contract - with RB Leipzig among the interested parties.
Partey could start against Crystal Palace after manager Mikel Arteta hailed the midfielder, who signed in October for £45million, as someone who brings the best out of his team-mates.