RB Salzburg sporting director Christoph Freund is inviting offers for Takumi Minamino.
Liverpool are being linked with the Japan striker ahead of the January market.
"He is an outstanding player with an outstanding personality," Freund told the Independent.
"The big clubs have been watching him and if I was them, I'd have no hesitation to sign him. Takumi is ready to make the next step in January."
Minamino caught the eye in the Champions League, in Liverpool's 4-3 win over RB Salzburg in their group game this season.
The Japanese forward was on the scoresheet that night and senior Liverpool players alerted Reds coaching staff to his ability following the fixture, suggesting he should be signed.