I'm not saying he should be first choice DM, clearly he isn't good enough, but we shouldn't be forcing him out of the club either as he brings a lot of positives off the pitch which would be missed. We can still craft a role for him here that isn't first choice DM.
It's ridiculous to think that we couldn't win the league or the CL with Arteta as a backup squad midfielder to a more powerful and mobile World class DM.