The highly-rated 20-year-old has just completed an impressive season-long loan at Barcelona B, and is now back at parent club Sevilla.
Liverpool boss Brendan Rodgers has identified Alberto as one of his summer targets and a deal is reportedly in place for around £6million.
However, the Spanish Under-21 international insists he is yet to commit.
"Nothing is decided," he told El Mundo Deportivo when asked about his move to Liverpool.
"All I know now is that I'm player of Sevilla.
"I cannot say anything more as I don't know and that is the truth. At the moment I am calm and thinking about my holidays."
Despite Alberto saying he is undecided, it is understood that Barcelona officially confirmed to Sevilla they would not be exercising their option on the player - leaving the way clear for Liverpool.