(FILES) In this file photo taken on August 4, 2019 Barcelona's Argentinian forward Lionel Messi waves before the 54th Joan Gamper Trophy friendly football match between Barcelona and Arsenal at the Camp Nou stadium in Barcelona. - Lionel Messi has informed Barcelona he wants to "unilaterally" terminate his contract with the Spanish giants, a club source confirmed to AFP on August 25, 2020. Lawyers for the Argentina star sent Barca a fax in which they announced Messi's desire to rescind his contract by triggering a release clause, sending shockwaves throughout the world of football. (Photo by Josep LAGO / AFP)