The 25-year-old has been strongly linked with Aston Villa in the past, although The Red Devils are now believed to be interested with question marks hanging over the long-term fitness of Gary Neville.
"Being linked with United is a positive thing as it means I am performing well," Bosingwa is quoted in the News of the World.
"United are a sensational club. To play next to Cristiano Ronaldo, Anderson and Nani is such a big advantage.
"But until the end of the season I think only of Porto. I want to fight for the Champions League."