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Johnny Ertl was one of Sheffield United's new signings in the summer of 2010. He played in a variety of roles for the Blades, mainly in midfield but also as a central defender and occasionally at wing back. His season came to an abrupt end in mid- March when he suffered a knee injury in a reserve game. Johnny was previously at Crystal Palace where he was a regular in the starting line-up from October 2009. He is a physically powerful player who has been used in defensive positions and as a midfield enforcer during his career.