Vidic has been strongly linked with a move to Barcelona or Real Madrid in recent months.
Vidic said: “I can’t stop people speaking, what can I do? I have said that I’m enjoying being here and playing here.
“I think I have shown in my performances how excited I am by this season. What I needed to say I have said and I hope it stops.
“I am just back from injury and I want to concentrate on football. I am pleased with how it’s going.”
Vidic’s contract with United expires in 2012.