Arsene Wenger knows very well that his young goalkeeper Wojciech Szczesny was at fault in last weeks defeat to Swansea, but he says there is not a perfect goalkeeper in the world and he can’t be judged on just one mistake. “He knows that,” Wenger said. “But a goalkeeper without any mistakes does not exist. Even great goalkeepers like Pepe Reina can concede a goal like he did against Man…


