King told Sky Sports News: “It’s always nice to have speculation around your name.
“As far as I’m concerned, I am contracted to Watford for the next two years and I’m just concentrating on playing as many games as I can, and getting as fit as possible.”
He added: “He’s (Boothroyd) the boss. I’m contracted to Watford for the next two years and it (leaving) hasn’t even crossed my mind.
“My focus is on getting my fitness back and my sharpness.
“You can ask anybody who wants to play in the Premiership. I have a few more games left and I suppose I’m getting my chance in a small way.”