Ricky van Wolfswinkel is flattered to have been linked with the likes of Manchester United, but insists he is happy at Sporting Lisbon.
The Netherlands international only joined Sporting in the summer on a five-year contract from Utrecht, but has impressed in Portugal.
He has been watched on several occasions by United in recent weeks and Chelsea have joined their Premier League rivals in keeping tabs on the 22-year-old.
Van Wolfswinkel is reported to have a €22million (£18.9m) release clause in his contract, which is around four times the figure Sporting paid Utrecht for his services.
However, he has played down speculation that he could move on again in January after expressing his contentment with life in Lisbon.
"It is good that my name was linked to big clubs such as Manchester United and others in England, but I am really content and happy at Sporting," Van Wolfswinkel told Dutch radio station NOS.
"Things are excellent in every sense. I play for a good club and I am scoring goals because I am taking this satisfaction on to the pitch."
Van Wolfswinkel's representative Louis Laros admitted over the weekend that he did not anticipate any January departure for the forward.
"Chelsea and Manchester United have watched Ricky, like other young footballers in Europe, but I do not expect a possible deal in the January market," Laros told the Portuguese media.
"Nobody has spoken to me directly and Sporting are not interested in a deal at the moment.
"However, in the world of football, it is impossible to say never about a sale."