Although there’s only six or so weeks of the transfer window remaining, it still promises to be a summer of change for Arsenal. So far, Edu and his team haven’t achieved much, perhaps inhibited by the Euros and Copa America. But Arsenal intend to clear out several players on the periphery of their squad, aiming to replace them with high-calibre alternatives – players Mikel Arteta will trust to play significant minutes. Last season William Saliba didn’t miss a single Premier League minute, and Bukayo Saka wasn’t far behind either. But by upgrading the likes of Jakub Kiwior and Reiss Nelson, Ars…