So much misdirected hyperbole in your post that I don't really know where to start. Wenger signed Xhaka and every one of our managers since has had him as a 'first on the teamsheet' player. For all that he dropped off, Wenger's pedigree and experience is undoubted; Emery didn't flourish at Arsenal, but is hardly unproven or unsuccessful; Arteta came without managerial experience, but has shown that he is not afraid to ditch senior players, and is extremely progressive in how he wants to play the game, and has shown that he has a very clear vision for this. He worked with some of the best players in the worls under Guardiola and should be able to spot a dud one when he sees it. To dismiss the opinions of all these managers in favour of your own shows clear and unjustified bias. But then your description of Xhaka as a talentless creep actually makes my argument for me.