Andre Schurrle has committed himself to Chelsea.
The German international has struggled with injuries and illness so far this season.
But he wrote on his blog: "In a phase with less playing time, transfer rumours are always coming up.
"Of course I want to be on the pitch as much as possible and score goals for my club.
"In a team like Chelsea with many top players you have to prove yourself again and again. Such an illness throws you back a few weeks.
"Since my transfer in 2013, the long season (here there are no winter breaks), the great World Cup and the short pre-season, I've only had a little time to relax in between.
"Of course this quickly brings media to speculate about a transfer. But this is not an issue for me.
"I feel comfortable here and would not think of such a thing!"