Arsenal (ENG) In: Granit Xhaka (Mönchengladbach), Takuma Asano (Sanfrecce Hiroshima), Rob Holding (Bolton) Out: Tomáš Rosický (released), Mathieu Flamini (released), Mikel Arteta (released), Isaac Hayden (Newcastle United), Wojciech Szczęsny (Roma, loan), Dan Crowley (Oxford United, loan), Wellington Silva (Fluminense), Jon Toral (Granada, loan), Joel Campbell (Sporting CP, loan) Atlético Madrid (ESP) In: Nicolás Gaitán (Benfica),