The 64-year-old, who has taken Tottenham from relegation candidates to title contenders in little over three years, was keen to emphasise again on Friday that he is only thinking about his current job at Spurs but admitted he would consider replacing Fabio Capello if the FA came calling.
Redknapp said: "It wouldn't be easy (leaving Spurs). It would be very difficult. I'm happy, but if the opportunity comes, and I get asked, I'll have to consider it."
Should the FA offer Redknapp the position, he appears unwilling to combine it with his current post.
Spurs are seven points off the top of the Barclays Premier League table and have a real chance of lifting their first title since 1961.
For that reason, Redknapp thinks it would be almost impossible for anyone to manage a club team and national side simultaneously.
He said: "It's hard enough managing Tottenham. For anybody to try and do two jobs, I'd say that would be very difficult.
"Your focus has to be on one job. I can't take my eye off the ball at Tottenham at the moment.
"We are looking to get Champions League football and we are still in the FA Cup. I owe it to (the players) to keep completely focused on the job I'm doing here.
"It wouldn't be fair to them if I started letting my thoughts wander elsewhere."