Pierre-Emerick Aubameyang and Alexandre Lacazette start up front together for the Gunners.Mesut Ozil misses out, as do injured pair Aaron Ramsey and Jack Wilshere.Rob Holding and Calum Chambers start in defence, while 18-year-old midfielder Joe Willock is handed a Premier League debut.Granit Xhaka returns to the starting line up.Islam Slimani is back on the bench for Newcastle after being ineligible for last weekend's win at Leicester.FULL LINE UPS BELOW Arsenal train ahead of trip to Newcastle ARSENAL take on Newcastle this afternoon, and their players were pictured in training yesterday. 1 / 15 Alexandre Lacazette Newcastle: Dubravka, Yedlin, Lascelles, Lejeune, Dummett, Ritchie, Shelvey, Diame, Kenedy, Perez, GayleSubs: Darlow, Clark, Manquilo, Hayden, Murphy, Slimani, JoseluArsenal: Cech, Chambers, Mustafi, Holding, Monreal, Elneny, Xhaka, Willock, Iwobi, Aubameyang, LacazetteSubs: Ospina, Maitland-Niles, Mertesacker, Kolasinac, Nelson, Welbeck, Nketiah