A napkin that secured Lionel Messi's boyhood move to Barcelona is now up for sale and you can enter the bidding for one of football's most important artefacts if you have a spare £300,000 to hand. The story of Messi's transfer from Argentina to Barcelona's La Masia academy starts with a commitment to sign the youngster being made on a paper napkin at a restaurant. Now starring at Inter Miami, Messi's outstanding European career established him as a Barcelona legend and one of the greatest-ever players the sport has ever seen. The original napkin that is printed with blue ink and is signed by the individuals responsible for Messi joining Barcelona is on sale with Bonhams - a privately owned international auction house.