The observers were impressed by Lionel Messi’s two-week trial with Barcelona in September 2000

The football world’s superstar Lionel Messi’s first contract which was signed on a napkin on December 14, 2000, is set to be auctioned in March under Bonhams — an international auction house.

The informal agreement was signed by the Argentinian striker with Barcelona director Carles Rexach when he was a mere 13 years old.

According to the reports, the price in which the contract would be auctioned starts from 350,000 euros, on behalf of Argentine player agent Horacio Gaggioli.

The observers were impressed by Lionel Messi’s two-week trial with Barcelona in September 2000, however, the club was hesitant to bring in the new young player.

Rexach was worried about the club losing such a good player as Messi had returned to his home city of Rosario in Argentina.

According to The Athletic, Gaggioli told last year that he had informed Rexach in December 2000 that if they could not commit to signing Messi — the teenager would be offered to other clubs, including Real Madrid.

Gaggioli was invited by Barcelona’s director to decide for Messi but due to the shortage of time to formally sign an agreement. The solution was to write on a napkin and take the signatures of all the parties in the contract, which would later turn legal.

The contract on the napkin read: "In Barcelona, on December 14, 2000, and in the presence of the gentleman (the agent, Josep Maria) Minguella and Horacio (Gaggioli), Carles Rexach, technical secretary of FCB, commits under his responsibility, despite the opinion of others who are against signing Lionel Messi, as long as the agreed fees are maintained."

“This is one of the most thrilling items I have ever handled,” Ian Ehling, head of fine books and manuscripts at Bonhams New York said, adding "yes, it’s a paper napkin, but it’s the famous napkin that was at the inception of Lionel Messi’s career."

"It changed the life of Messi, the future of FC Barcelona, and was instrumental in giving some of the most glorious moments of football to billions of fans around the globe."

Gaggioli while recalling the event termed it a "marvellous moment" saying: "That napkin broke the deadlock."

"My lawyers looked at it. The napkin had everything: my name, his name, the date. It’s notarised. It was a legal document."

“It’ll be a part of me for the rest of my life. The napkin will always be at my side. I live in Andorra and I’ve kept the napkin in a safe inside a bank."

Minguella told Catalunya Radio Wednesday that the napkin had been in his office for years and he had offered Barcelona the chance to display it in the club’s museum.