Ignacio "Nacho" Monreal Eraso (Spanish pronunciation: [iɣˈnaθjo monreˈal eˈɾaso] or pronounced [ˈnatʃo monreˈal]; born 26 February 1986) is a Spanish former professional footballer who played as a left-back or centre-back. He started playing with Osasuna in 2005, going on to appear in 144 official games over the course of five La Liga seasons. In 2011 he signed with Málaga and, two years later, joined Arsenal, winning three FA Cup trophies with the latter club while taking part in 251 matches in all competitions. He ended his career in 2022 with Real Sociedad, winning the 2019–20 Copa del Rey.