Shkodran MustafiEnglish Premier LeagueMustafi to Schalke; Maitland-Niles, Willock loaned4YJames OlleyStuart MacFarlane/Arsenal FC via Getty Images
English Premier LeagueArsenal, Spurs both need defensive overhauls to get back to the top5YJames OlleyPhoto by Sebastian Frej/MB Media/Getty Images