Englands RBS 6 Nations Grand Slam and World Cup-winning captain is playing his final season for Leicester, after announcing his decision to retire from all levels of rugby.

Johnsons future will become the focus of intense speculation in the coming months, with any number of teams happy to give one of rugby unions biggest names a position on their coaching staff.

The 34-year-old has yet to make any post-retirement plans but has revealed he would like to stay in the game - and refused to rule out the possibility of eventually becoming England boss.

Ive been very fortunate to have enjoyed some great experiences from playing rugby for 16 years, and it would be selfish of me not to pass those on at some point if Im able to, he told BBC Radio Five Lives Sportsweek programme.

Whether that will happen on an ad-hoc basis with junior teams or whether it will be full time in the Premiership, I dont know.

Well have to see when I have some time off and have had the opportunity to think about it. Ill make a decision then.

I have no track record as a coach, only as a player. You have to learn your trade. I cant start thinking about England until Ive been involved at a lower level.

But if I took up coaching, enjoyed it and wanted to be the best I could then coaching England would be the ultimate thing to do.

But right now I have no ambitions to coach anywhere, let alone at international level.

Johnson was widely touted as a possibility for the summer Lions tour to New Zealand, but the Leicester second row - who called time on his England career 12 months ago - insists that was never an option.

He said: It would be very hard to get picked for the Lions when youre not playing in the Six Nations.

Theres a perception around that some of the guys who played in Sydney in 2003 would turn up for the Lions and everything would fall back into place.

But thats not the way it works. By the time the Lions tour gets under way it will have been 18 months since I played Test rugby, and thats a long time to be out - especially when youre nearing the end of your career.

There are plenty of good players around, and its time for some other guys to get their chance.

Johnsons inspirational leadership for England and the Lions has seen him hailed as his countrys greatest captain in any sport.

But he said: People can get carried away - I dont think Im anywhere near Englands greatest sporting captain.

If you win games people think youre a great captain. But you need a good team to win games, and Ive been lucky enough to be part of a good team.

I was lucky enough to play in a side which won a World Cup. I think any number of guys could have captained that side to success. Ive always said captains get too much credit when things go well.