Anthony Joshua: I'll box for another 10 years

World heavyweight boxing champion Anthony Joshua says he has another 10 years in the sport.

WBA, IBF and WBO title holder Joshua, 28, fights Russia's Alexander Povetkin on 22 September at Wembley Stadium before hopefully facing WBC champion Deontay Wilder.

Read more: 'I have to look at the end goal' - Joshua changing approach for Povetkin