Sheffield United have confirmed the appointment of Chris Wilder following the sacking of Ruben Selles . Wilder has returned for a third stint as Blades boss after their disastrous start to the Championship campaign. Wilder was sacked in June after their play-off heartbreak, with United turning to former Hull and Reading boss Selles. But he was dismissed after losing his six matches in charge and the club have returned to Wilder for stability. Sheffield United said in a statement: "Following a