Reds boss Jurgen Klopp is a known admirer of the 18-year-old and tabled an £11.5m bid to take him from Dortmund in the summer.
That was unsuccessful, with BVB eager to keep hold of their prized asset who has turned heads even further during his nine Bundesliga outings this season.
The USA international has also made five appearances in the Champions League and it seems inevitable that the big clubs will come calling again at the end of the campaign.
Reports suggested that Liverpool might be keen to do business in the winter, with Klopp stressing that they "watch the market all the time".
However, Dortmund’s sporting director, Michael Zorc, has poured cold water on any possible winter deal for the starlet, telling Bild: "It’s not worth the effort for Liverpool."