The 19-year-old striker has been allowed to finish the season with Swansea City, who he joined on loan in January.
"I just want to finish the season, and hopefully get promoted. That's the aim," Brewster told Sky Sports.
"Who knows? I don't know if I'll be here next season, I don't know if I'm going to be with Liverpool.
"I don't know where I'm going to be next year, I just want to finish the season strongly and see what happens next season."