Damien Anthony Duff (born 2 March 1979) is an Irish professional football manager and former player who played predominantly as a winger. He has been the manager of League of Ireland club Shelbourne F.C. since November 2021. He began his professional playing career with Blackburn Rovers, with whom he won the Football League Cup, and in 2003 was signed for £17 million by Chelsea, where he won two Premier League titles and another League Cup. After three seasons at Stamford Bridge, he left for Newcastle United where he won the 2006 UEFA Intertoto Cup, and then moved on to Fulham, with whom he played in the 2010 UEFA Europa League Final. He ended his career with brief spells in the A-League with Melbourne City and the League of Ireland with Shamrock Rovers before retiring in December 2015. Since then, he has moved into coaching, working with Shamrock Rovers, Celtic and Republic of Ireland youth teams. Duff played international football for the Republic of Ireland for 14 years, winning 100 caps between 1998 and 2012. He played at the 2002 FIFA World Cup and captained the country at UEFA Euro 2012. Club career Blackburn Rovers Duff joined Blackburn Rovers as a trainee in 1996 after playing for Leicester Celtic, Lourdes Celtic and St. Kevin's Boys as a schoolboy in Dublin. He made his Blackburn debut at the age of 18 against Leicester City on the final day of the 1996–97 season for which he won the Man of the match award. In his first full season, he scored five goals. Blackburn were relegated the following season. Duff helped Blackburn achieve promotion back to the Premier League in 2001 and then win the League Cup in 2002, beating Tottenham Hotspur 2–1 at the Millennium Stadium in a season where he was Player of the Year. Following the 2002 World Cup, Duff signed a new four-year contract with Rovers. Despite injury problems in the 2002–03 season, he finished as Blackburn's top goalscorer with 11 goals, which helped his team finish sixth and qualify for the UEFA Cup. Chelsea In the run up to the 2003–04 season, Chelsea made a series of bids for Duff, with a £17 million offer, eventually triggering a release clause in the player's contract. Duff chose to move to West London in July. Signed by manager Claudio Ranieri as part of the development of Chelsea financed by new owner