Liverpool are one of several clubs interested in Freiburg winger Kevin Schade.
The 20-year-old scored four goals in 21 Bundesliga matches last season, with his season ended in March due to injury.
According to NTV, Brentford have failed with a 15m offer for Schade.
Liverpool are also interested but have yet to submit a bid.
Three unnamed clubs from Bundesliga are also keen on the Germany U21 international.