Mike Tyson may ‘never be cleared’ by doctors to fight Jake Paul after the controversial bout was postponed at the weekend. YouTuber Paul and Tyson were scheduled to step into the ring together next month in an officially sanctioned fight. The bout was heavily criticised when it was first announced given he three-decade age gap between them both. New concerns were raised last week when Tyson required medical attention for an ulcer flare-up while on a plane. The 57-year-old’s representatives said at the time that he was ‘doing great’ to try and play down the seriousness of the incident. However,…