It's not a puzzle, it's how Wenger operates in the market and manages his squad, he is a compulsive gambler who takes unnecessary risks. Our situation in Defence is laughable, it's mismanagement of the highest order and quite frankly is not acceptable.
We are a big club, we are involved in four competitions and will likely play circa 50 games if not more per season, why on earth does Wenger who is sitting on Millions of pounds not build a proper squad and account for things such as injuries? It really doesn't make any sense to me...more so given that he as sold Defenders and for one reason or another chosen not to replace them!!!