I understand what you are saying. However, I am not 100% certain that the perception is reality. When you look at last season, we had two central midfielders who spent large parts of the season injured: Cazorla and Wilshere; and we had a few midfielders on the periphery, injured, or not performing to expectations: Arteta, Flamini, Oxlade-Chamberlain, and Rosicky. Three of these midfielders are leaving this summer and I suspect that at least one other will leave. Taking that into account, the club is not too flush with central midfielders.