In the summer transfer window, Messi left the Spanish big club for Paris Saint-Germain.
Since then, things have not gone as expected for Ronald Koeman's Barcelona, who are currently in ninth place in the table after ten rounds played.
In addition, they have only taken three points so far in the Champions League.
The loss was the last straw
And the heavy loss against newcomer Rayo Vallecano was what made the cup overflow.
Shortly after midnight, the night before Thursday, the club announced that the Dutchman may leave his assignment with immediate effect.