David Anthony O'Leary (born 2 May 1958) is an Irish football manager and former player. His managerial career began at Leeds United, and later he managed Aston Villa. He most recently worked as the manager of Al-Ahli Dubai. The majority of his 20-year playing career was spent as a central defender at Arsenal. O'Leary's tally of 722 appearances for the North London side stands as a club record.