Reports have linked the 28-year-old with a move to French side Sochaux.
Utaka told the Portsmouth News: “To be honest I don’t know anything (about my future).
“I keep going and I will see how it goes. I’ll keep working hard and working hard for Pompey. That’s why I am here. Then we will see what goes on.”
He added: “I don’t believe in speculation (about leaving). It doesn’t matter. I’m a footballer. I have to do what I have come here to do.
“Football is a difficult game, but you always keep going. It’s what I love to do. I keep going no matter what.
“I need to be playing, but we will see how it goes. I’m happy. I’m very, very happy to be honest. But we will see what happens.”