Johnson has enjoyed a break from rugby since retiring

"People have made overtures to me about coming back but the time isn't right," Johnson told The Times newspaper.

"I honestly haven't decided what I want to do," added the 37-year-old, who retired from playing in 2005.

"I will get involved in coaching if and when I want to. The biggest criteria is that I 100% want to do it."

Johnson has been linked with a return to the England set-up in the wake of the world champions' demise in recent years.

But he insisted he would not be be badgered into taking on a coaching or managerial role, either at club or international level.

"I will not do it because somebody says they think I should," said the former Leicester captain.

"I have always felt coaching must be the most frustrating business in the world. It is full-on seven days a week."

"People think if I turned up, I could wave a magic wand and England would be instantly successful," he added. "Sorry, but it doesn't happen like that. Teams have to build and grow over time."