It’s slightly predictable that the pro-Beckham contingent have started to put-down the Olympic football tournament as meaningless. Is that so? 90,000 people watched the 2008 final, 104,000 the 2000 climax and 101,000 the 1984 final. Olympic football is not a dead duck – it’s just that Great Britain has not played a part in it since the post-Edwardian days. Olympic football can provide a few pointers to the future. Already, Spain are being tipped to win this year’s competition as their talented crop of youngsters is given its chance to shine. Some of the greatest modern-era players have turned out in the Olympics. Lionel Messi and Carlos Tevez have both played for Argentina, while Spain’s Xavi played in the 2000 series. Notable names like…