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Hayden Ian Mullins (born 27 March 1979) is an English former professional footballer and current manager. He played primarily as a defensive midfielder, but he also played as a sweeper and at right-back. He was most recently the head coach at EFL League Two club Colchester United. Mullins made three appearances for the England under-21 squad in 1999. After retiring, he became under-23 manager of Watford in 2016, and was twice their interim manager.