Jurgen Klopp paid tribute to Robert Lewandowski ahead of his final home match for Borussia Dortmund against Hoffenheim on Saturday.
Poland international Lewandowski arrived at the Bundesliga club from Lech Poznan in 2010 and has established himself as one of the best strikers in the world during his time at Dortmund.
The 25-year-old - who has scored 72 Bundesliga goals during his time at the club - will now bid farewell to the home supporters when Dortmund hosts Markus Gisdol's men, ahead of his free transfer to rival and Bundesliga champion Bayern Munich.
Dortmund head coach Klopp harbors no ill-feeling towards the forward however, and says he leaves the club a "world-class" striker.
"He arrived as a great striker and leaves as a world-class striker," Klopp said at his pre-match press conference.
Lewandowski will play for Dortmund twice after Saturday's encounter, firstly in the club's last Bundesliga fixture at Hertha Berlin before he faces his future employer in the May 17 final of the DFB-Pokal.
"Lewandowski has been a brilliant striker for us and it's been a great time," Klopp added. "I hope he gives it everything in his last 3 games."
Dortmund heads into the encounter protecting a seven-match unbeaten run in Germany's top flight, and the fine run has left Klopp's charges wondering what might have been had the team not suffered such a horrendous injury crisis in defense this season.
The team still sits 19 points behind already-crowned champion Bayern Munich in second, but will see fullback Marcel Schmelzer return from a groin injury, while Erik Durm (ankle) could also come into contention.
However, captain Sebastian Kehl (hamstring) and fellow midfielder Oliver Kirch (illness) will miss out.
Dortmund's recent upturn in form is sure to be tested by a Hoffenheim side that has performed admirably in the Bundesliga this season.
Hoffenheim only preserved its top-flight status after winning at Dortmund in the final league game of last season, before beating second-tier Kaiserslautern in the relegation playoff.
Gisdol's men have had a far more comfortable campaign this time around and, with just two games remaining, appear set to clinch a top-10 finish.
The team currently sits ninth, but forward Anthony Modeste - who has 12 league goals this term - will miss out for Hoffenheim through suspension.