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Featured Image Credit: PA/Barcelona
Messi made most of his emotional farewell on August 8 by clearing up his area in the Barca dressing room.
He collected all of his belongings that he didn't take from his locker before the summer.
But Spanish outlet AS claim the 34-year-old had to leave one behind.
Messi reportedly left behind the best player of the 2018 Joan Gamper Trophy match.
He won the individual gong following his sensational performance against Boca Juniors.
AS state: "Among the items he had to leave behind was the award he received for the best player of the 2018 Joan Gamper Trophy match. He received the star-shaped award after scoring a goal and giving an assist in the 45 minutes he played in that game against Boca Juniors, which ended 3-0.
"Aware that his locker space may have a new tenant this season (although it seems unlikely that someone from the squad will assume the responsibility of accepting the '10', at least for the time being), Messi decided to leave the award on top of the furniture and leaning against the wall.
"Now it remains to be seen if someone will pick it up to send the trophy to Paris or leave it at his house in Casteldefels, or if Messi finally decides to leave it in the dressing room as a relic to his time at Barcelona."
Messi's old locker is now empty, with just the number 10 on the drawer.
The six-time Ballon d'Or winner will be looking to add to his collection when he begins his new chapter at Paris Saint-Germain.
He's been training with his new teammates ahead of his first game for his new club.
The legendary Argentine is poised to make his PSG debut against Reims on August 29.