RB Leipzig coach Ralph Hasenhuttl admits he's unhappy with Naby Keita's form.
Keita will join Liverpool on July 1 after the two clubs agreed a deal last summer.
The Reds tried to pay a further fee on top of the initial £55million deal to bring him to Anfield in January, but Leipzig resisted, considering the 22-year-old invaluable to their push for Champions League qualification.
"Naby is not as consistent this year as last year," Hasenhuttl said. "It's important that he brings his expectations back to normal levels.
"I'm not one who wants to motivate with fear. I don't immediately get the whip out in the classic sense and I don't kick the players non-stop."