Netherlands striker Ruud van Nistelrooy may have played his last game for Hamburg after being ruled out for several weeks with a calf injury he sustained against Hannover on Saturday.
The 34-year-old tore a muscle in his left calf in the 0-0 draw in the Bundesliga and it places further question marks about his future at the Imtech Arena, given that his contract runs out at the end of the season.
Van Nistelrooy told the club's website: "It happened in the closing stages. After the game, the pain got worse.
"The diagnosis is bad. I hope I can play again as soon as possible but I am sure it will turn out to be some time."