By Katie Catherall Arsenal have confirmed the signing of Chelsea winger Raheem Sterling on a season-long loan. The Gunners’ move for the Blues forward went right to the wire and required a deal sheet to be filed to the Premier League in order to complete it after the English transfer deadline. England and Chelsea star Sterling has swapped west London for north London and been reunited with Mikel Arteta, who he previously worked with at Manchester City, at the Emirates Stadium. The Blues effectively forced Sterling out of the club after stripping him of his squad number, while head coach Enzo M…