Mike Tyson showed off his remarkable physique as he took part in a mock street brawl with Shannon Briggs ahead of his fight with Jake Paul later in the year. Tyson last fought Roy Jones Jr back in 2020 and is coming out of retirement once again to face Paul, who is 30 years his junior. The boxing icon has already hit back at critics, suggesting they’re ‘jealous’ amid scrutiny surrounding the pair. But Tyson looks raring to go, if footage filmed in Brooklyn is anything to go by. The 57-year-old has taken to Instagram to share a video of himself and Briggs having a mock street brawl. Iron Mike m…