Wenger has made mistakes, something Nasri said rung kinda true oddly, that Wenger was too kind on young players not making the grade, still giving them game time etc. See why since that's most his schtick, but he has seemed to rely on players who just aren't good enough. However inevitably the lack of wages to pay has meant that they can't hold players long enough, and finding another Fabergas will be one in a million, now they have to try and convince Gotze to come to London for much worse wages than he'd get elsewhere and struggle to make the champions league. They'll lose Van Persie in the summer, can see them becoming a mid table club. I do expect the big money to dry up eventually in Premier League but doubt in Wenger's reign.