The Argentine joined the Blaugrana at just 13-years-old and has flourished to become arguably the greatest player of all time, collecting six Ballon d'Or trophies, 10 La Liga titles, and four Champions League titles.
However, over the past couple of years, despite winning the league last year, Barca have undoubtedly regressed, with them losing the league to a competent if unspectacular Real Madrid side in 2019/20.
Things apparently reached breaking point for Messi after the club were humiliated in the Champions League, as Bayern dumped them out at the quarter-final stage with a comprehensive 8-2 victory.
Shortly after that loss, Quique Setien was fired as head coach and Ronald Koeman was appointed.
The Dutchman stressed the importance of keeping Messi, but it appears that any pleas to the Argentine superstar have fallen on deaf ears.
According to reports in Spain, Messi has faxed Barcelona asking for the termination of his contract, looking to utilise a release clause that would allow him to leave for free.
That clause apparently ended at the end of May, but Messi is looking to point to the fact that the season was extended due to the worldwide pandemic as the reason for it to remain valid.