The Spain international was recently linked with a move back to former club Valencia, but has now insisted that he has no intention of leaving London.
"I think it's normal in every transfer window that there are lots of rumours but I'm happy here," he told Chelsea TV.
"It's been a very, very good two seasons for me here, maybe the best of my career, and what I want this season is the same.
"I'm looking forward to achieving as many trophies as we did the last two seasons and hopefully this is going to be a good season for us again,"
Chelsea's next Premier League fixture is the home clash with Everton on September 14.