"It's something that's not up to me so I don't like to talk about it," said the former PSV Eindhoven man. "I just want to keep focused on the games we've got left.
"We want to get into Europe and I'm not concerned about my deal. I'm happy to stay and I still have a one-year extension anyway.
"I'm happy here and my family is happy here so I don't know why I shouldn't stay.
"Do I know if I can talk to other clubs? I don't know and I don't care because I just want to focus on my football."