how old can you be to play for england u21
England national under-21 football team This team is for English players aged under 21 at the start of the calendar year in which a two-year European Under-21 Football Championship campaign begins, so some players can remain with the squad until the age of 23. As long as they are eligible, players can play for England at any level, making it possible to play for the U21s, senior side, and again for the U21s, as Jack Butland, Harry Kane, Calum Chambers and John Stones have done recently. It is also possible to play for one country at youth level and another at senior level (providing the player is eligible).
David Beckham Having signed for Manchester United as a trainee on 8 July 1991,[32] Beckham was part of a group of young players, including Ryan Giggs, Gary Neville, Phil Neville, Nicky Butt and Paul Scholes, who were coached by Eric Harrison, and helped the club win the FA Youth Cup in May 1992. Beckham scored Manchester United's second goal in the 30th minute of their 3–1 first-leg win of the final against Crystal Palace on 14 April 1992. In the second leg on 15 May, Beckham played a full 90-minutes of the fixture which ended 3–2 in favour of Manchester United and 6–3 on aggregate. Beckham's impact led to a first-team debut on 23 September 1992, as a substitute for Andrei Kanchelskis in a League Cup match against Brighton & Hove Albion. Shortly afterwards, Beckham signed as a professional on 23 January 1993.[32]