Mikel Arteta details "unbelievable" Arsenal training ground injury as Gunners suffer blow
![Mikel Arteta details](https://i2-prod.mirror.co.uk/incoming/article33304029.ece/ALTERNATES/s615/0_Arsenal-Training-Session.jpg)
Arsenal are without a number of first-team players on their pre-season tour of America, with international tournaments and injury issues seeing Mikel Arteta leave out several star names