The 68-year-old became United’s longest serving manager last week.
“The older you get the more worried you are about retiring,” he told MUTV.
“You start to realise that whilst you have got your health and good fitness, you should carry on in your job.
“All thoughts of retirement are in the back of my mind.
“It (saying he was going to go) was a mistake. At the time there were some reasons for it. It was one of those things.”
