Green earned his first call-up to the full England squad in 2004 while at Norwich. On 31 May 2005, he became the sixth Norwich player to wear the Three Lions shirt when he appeared as a half-time substitute for David James in a 3–2 friendly win against Colombia at Giants Stadium in the United States. Green remained in the England squad despite Norwich having been relegated into the Championship in 2005, and was selected for the England 2006 FIFA World Cup squad. However, he ruptured his groin whilst taking a goal kick during the England B international against Belarus on 25 May. He was replaced in the squad by Liverpool's Scott Carson. The injury not only meant that Green missed the World Cup but also the start of 2006–07 season.