Francis Ngannou spotted practising punch Mike Tyson told him to use during open workout

Francis Ngannou was spotted practicing a punch Mike Tyson told him to use during the open workout ahead of his fight against Anthony Joshua.

Ngannou returns to the boxing ring when he takes on Joshua on FRIDAY.

It will be his second foray in the world of boxing following his high-profile UFC departure.

Ngannou gave Tyson Fury a scare but ultimately lost a controversial decision in his boxing debut.

The former UFC heavyweight king will look to get off the mark in boxing as he faces former unified world heavyweight champion Joshua.

Ngannou won't have Tyson in his corner but he was spotted practicing a punch the boxing legend told him to use against the self-proclaimed 'Gypsy King'.

During the open workout on Tuesday, 'The Predator' was seen performing a superman punch - a move he used against the WBC title holder.

'Iron' Mike instructed Ngannou to use that punch, revealing: "I told him to use it."

The 57-year-old will be absent from Ngannou's team for his showdown against Joshua.

Asked if he had been working with the former world heavyweight champion, he said: "Unfortunately not for this camp.

'"My full camp was here in Saudi Arabia so I was here this entire time, although I was training in Mike Tyson's gym!"

The French-Cameroonian is confident of victory on fight night, predicting a big win for his career.

"My prediction is that I'm going to win," he added. "I know it's going to be a tough fight, it's going to be a very competitive fight, a very challenging fight because now Anthony Joshua has definitely watched the tape on me.

"There is tape out there on me, unlike the last time, so he's been preparing for me, preparing for some style, and I think that's going to make it slightly difficult for me."