Arsenal manager Mikel Arteta has hinted Cedric Soares could make his debut against Manchester City.
The Portuguese fullback signed on loan from Southampton in January, but has yet to make an appearance after having arrived at the Emirates with a pre-existing knee injury.
"I think they [Soares and Mustafi] will be available to play," he said.
"Hopefully everybody will be available to train tomorrow and we'll pick the squad with the best players we can."
The Gunners will face Pep Guardiola's side at the Etihad on Wednesday night.