Spain FC Barcelona's flagship player Lionel Messi has submitted a transfer request to leave the team immediately.

Foreign media reported that Messi submitted a request for a transfer after being greatly disappointed with the team's weakening after Barcelona recently defeated Bayern Munich 8-2 ​​in the Champions League.

Barcelona is expected to have a legal battle with Messi in the future, claiming that the deadline of the contract with Messi will be 6 next year.

Messi, who joined as a youth player in Barcelona in 2000, has been playing for over 20 years, leading Barcelona's 10 league titles and 4 Champions League titles.