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Denis Irwin joined United from Oldham Athletic when he was 24 years old. In his first five seasons at the club he averaged an incredible 53 games a season, with United competing for every trophy every season.
Irwin was a solid defender and a great attacking support to the likes of Lee Sharpe and Ryan Giggs on the left wing.
However, this wasn't where his skills stopped. Irwin was an accomplished free-kick and penalty taker, with the Daily Mail listing him as one of the best of all time from the penalty spot. He scored eight of the 10 he took for United, according to United's official website, which means only Eric Cantona, Ruud van Nistelrooy and Cristiano Ronaldo have a better record than him in the Premier League era.
In 12 years at United, Irwin won seven Premier League titles, three FA Cups, one League Cup, one Champions League, one Cup Winners' Cup, one European Super Cup and one Intercontinental Cup.
Fifteen trophies in 12 years is a pretty impressive record, particularly when you consider he started all but one of the finals. Irwin missed the FA Cup final in 1999 after David Elleray bizarrely gave him a second yellow card in a game against Liverpool for kicking the ball away, when it appeared as though Irwin hadn't heard the whistle.
Irwin left United when he was 36 years old but, after retiring from the game in 2004, he became a pundit for MUTV. He continues to work for the club, goes on pre-season tours and speaks like a fan in the press when discussing United.
When interviewed by By Far The Greatest Team last year, Irwin modestly played down the talk of him being the club's best left-back:
Tony Dunne was a fantastic player back in the 1960s. Patrice Evra has been great in the last seven or eight years since arriving. I was fortunate in that I spent 12 years here during which the club was so successful. I played in a great team so it’s just good to be remembered.
Irwin had it all as a player, offering qualities above and beyond what you would expect from a left-back, but he has been keen to extend his connection with the club past his playing days. He won it all with United and should be the bar that Luke Shaw measures himself against.