The 22-year-old centre-back has been the subject of intense transfer speculation in recent weeks, with suggestions he could be on his way out of Estadio do Dragao this summer.
Newly-appointed Chelsea boss Jose Mourinho is believed to be a huge admirer of the France international, and was monitoring him during his time at Real Madrid.
And, since his return to Stamford Bridge, the Portuguese tactician is still thought to be interested in Mangala's signature.
Manchester City has also been mooted as a potential destination for the former Standard Liege star, though the uncertain managerial situation at the Etihad Stadium might put pay to any possible deal.
Ligue 1 champions Paris Saint-Germain have also been credited with an interest in the in-demand defender, and a move back to his homeland might be a favourable option.
However, despite the constant transfer talk, Mangala insists he is not thinking about his long-term future, and is instead focusing on bringing Porto a fourth consecutive Primeira Liga title in 2013/14.
"I not am preoccupied about my future," said Mangala. "There have been many rumours in the papers in the last few days, but I am very calm.
"My objective is to work each day and to progress in my club. I am only thinking about to follow up for Porto the next season."
He added: "I was also very happy with my debut for France, my dream is to play in the World Cup 2014."
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