A relaxed and slimmed down world heavyweight champion Anthony Joshua said he's aiming for a crowd pleasing knockout win over Ukrainian Oleksandr Usyk when he puts his titles on the line in front of 67,000 fans at London's Tottenham Hotspur Stadium on Saturday.

The reigning WBO, WBA, IBF and IBO champion last fought in front of just 1,000 spectators, at London's Wembley Arena as the UK was under a series of Covid-19 restrictions last December.

The 31-year-old successfully retained his titles with a 9th round knockout of Bulgarian Kubrat Pulev but the unbeaten former unified cruiserweight champion, Usyk, is widely viewed as 'AJ's' biggest test since he beat fellow Ukrainian Wladimir Klitschko in a sold out unification bout at Wembley Stadium in 2017.