Summary:
Arsenal's new signing Alexis Sanchez could make his competitive debut against Manchester City in the Community Shield at Wembley.

Full article:
By . Beci Wood . Summer signing Alexis Sanchez is set to make his competitive debut for Arsenal against Manchester City in the Community Shield on Sunday. Sanchez could be one of three debutants for the Gunners at Wembley, with Mathieu Debuchy and Calum Chambers also available. Szczesny, Ospina, Debuchy, Jenkinson, Gibbs, Monreal, Koscielny, Chambers, Rosicky, Arteta, Flamini, Diaby, Ramsey, Wilshere, Oxlade-Chamberlain, Coquelin, Cazorla, Ozil, Giroud, Sanogo, Sanchez. New goalkeeper David Ospina is a doubt with a thigh problem. Per Mertesacker, Mesut Ozil and Lukas Podolski are not available. The trio do not return to training until Monday after being given extra rest following their World Cup triumph with Germany last month. Ready to make his mark: Alexis Sanchez looks set to make his competitive debut for Arsenal . Heroes reception: Alexis Sanchez poses with fans after a training session . In the squad:  Mathieu Debuchy could also make his debut for Arsenal . Another newcomer:  Calum Chambers shrugs off Radamel Falcao during Emirates Cup pre-season match .