Barcelona captain, Lionel Messi, has told the club to terminate his contract, so he can leave as a free agent, Marca reports.
Messi is understood to have told the Catalans, to activate a clause in his contract, which allows him to leave the club at the end of the season.
However, both parties have disagreed over when the season actually finished.
Barca feel the clause could only be activated by the end of June, while Messi feels the campaign ends in August.
According to Spanish football expert, Guillem Balague, this is likely to result in a standoff and Messi refusing to undergo preseason tests or training.