Nigerian-born boxer, Anthony Joshua, is talking tough, ahead of his fight against Oleksandr Usyk on September 25.
Joshua, who holds the WBO, WBA and IBF titles, has also said he needed to fight Tyson Fury before he retires.
Joshua will take on USYK at Tottenham Hotspur Stadium on September 25.
He said that fighting good fighters helps to bring out his best.