Mikel Arteta has said Arsenal are "on alert" to enter the January transfer market as ongoing injury issues deplete his squad.

The Gunners travel to Aston Villa on Saturday sweating over the fitness of Declan Rice and Cristhian Mosquera after they became the latest players to suffer a setback this season.

Arsenal have been without Kai Havertz , Gabriel Jesus , Viktor Gyökeres , Martin Odegaard , Gabriel Magalhães and Noni Madueke among others for prolonged spells this season but remain five points clear at the top of the Premier League .

The club spent more than £250 million ($333.5m) on eight new signings but Arteta hinted there may be more to come if the right situation arose.

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