Two-time heavyweight world champion Anthony Joshua says he will beat Tyson fury if they eventually fight each other.
Joshua insists sparring with Fury would help him win a future fight between them .
Joshua reclaimed his IBF, WBA, WBO and IBO titles after defeating Andy Ruiz Jr on points earlier in December.
Talks of a showdown with Fury gathered momentum shortly after, with Joshua offering to spar with Fury ahead of his heavyweight rematch with Deontay Wilder in February.
