One of the most pivotal documents in the history of football (soccer) is the famous and unique napkin on which the first promise of a contract was written to secure 13-year-old Lionel Messi for FC Barcelona. It changed the fortunes of both the club and Messi himself, who went on to become one of the greatest players of all time. The original napkin in blue ink is being offered at Bonhams on behalf of Argentine agent Horacio Gaggioli in an online auction running from March 18 to March 27. The starting price is £300,000 ($380,000 US).