Borussia Dortmund coach Thomas Tuchel has warned his players Liverpool manager Jurgen Klopp will show no mercy on his return to his former club.
Liverpool play at the Westfalenstadion on Thursday for the first leg of their Europa League quarter-final.
And Klopp is preparing to face a team he won two Bundesliga titles with during a seven-year spell in charge.
But Tuchel said: “From the moment the whistle goes Jurgen Klopp will want nothing else than a win. And we too.”
Tuchel has enjoyed an impressive first season at Dortmund, guiding a team which finished seventh under Klopp last season to second in the table, five points behind leaders Bayern Munich.
But the 42-year-old added that “no-one has forgotten” what Klopp achieved at Dortmund.
“Anything else but a warm welcome for Jurgen Klopp will be a surprise,” said Tuchel. “We are now where we are because of our history with Jurgen.”
The Germans have received an injury boost with Mats Hummels, Sokratis Papastathopoulos and Ilkay Gundogan taking part in training on Tuesday after the trio missed the 3-2 league win over Werder Bremen at the weekend.
Forward Roberto Firmino, who has missed the Reds’ last two matches because of a hamstring injury, has travelled with the Liverpool squad to Germany.