Klaas-Jan Huntelaar has said he would consider remaining at Schalke for the remainder of his career, although he has admitted to being unhappy with the club's form and also his own.
In December 2012, Huntelaar, 29, prolonged his contract at Schalke until 2015, after being linked with making a free transfer to the Premier League in the summer.
The 2011-12 Bundesliga top scorer has been struggling for form this campaign, and at the weekend scored only his sixth Bundesliga goal of the term in Schalke's 4-1 win at Wolfsburg.
"It may well be that I sign another contract at Schalke," Huntelaar told dpa. "At nearly 32 (at the end of the current contract), I can sign one more contract. It may well be that I end my career here."
Following back-to-back wins Schalke have climbed to sixth in Bundesliga, only two points behind Eintracht Frankfurt in fourth, while in the Champions League they have a good chance of qualifying for the quarter-finals as they go into their return leg at home to Galatasaray with after a 1-1 draw.
But ahead of the derby against Borussia Dortmund on Saturday, Huntelaar was also critical of Schalke's season. He said: "I am not happy with our season so far. I am not happy with what I have shown and not happy with football we are playing."