The 26-year-old, who has attracted attention from elsewhere after scoring 18 goals in 32 appearances this season, has again underlined his commitment to the club.
The 26-year-old has been a revelation in English football since arriving from Rayo Vallecano for 2.2 million pounds in the summer, scoring 18 goals in 32 appearances in all competitions for the Swans.
Such form had led to speculation of a big-money move elsewhere in the summer, but the forward insists he is enjoying his time in Wales and has no plans to leave the club any time soon.
"I'm happy at the club," he told reporters. "If we win the League Cup final we will be in Europe, then I will be very happy. I'm not thinking about any other teams.
"I don't know how long I will be at Swansea. I'm just enjoying it now."
Michu penned a new contract during January, committing himself to the club until 2016.