This is a market on whether Lionel Messi will sign for Barcelona in the Summer transfer window, which closes on September 1, 2023.

This market will resolve to “Yes” if it is announced that Messi has signed for Barcelona during the transfer window. Otherwise, this market will resolve to "No".

This market will also resolve to “No” if it is announced that Messi has signed a contract extension with PSG, or signs for a club other than Barcelona during the described transfer window.

If a club announces that Messi has signed with them but later retracts that announcement, this market will resolve according to the initial announcement.

This market's resolution source will be official, credible announcements from either PSG or the signing club.