The King of Pop - who died in June 2009 after his doctor Conrad Murray, who is serving four years in jail on an involuntary manslaughter charge, administered a fatal dose of the anesthetic Propofol - agreed to a 50-date 'This Is It' concert residency at The O2 in London with promoter AEG Live because he believed the gun laws in the UK would provide him with more protection.
His friend Jason Pfeiffer told The Sun on Sunday newspaper: "The last time I saw him he ways saying his goodbyes to everyone in the office.
"It was like he knew he was never coming back, and he would often say he thought he was going to be shot on stage.
"He said the comeback was in England due to the gun laws there.
"That's why he ditched a US comeback as people had access to guns here and would shoot him. He thought America was too dangerous.
"But he still had some fears that he would be shot on stage."
Jason, who was the office manager for the late singer's disgraced dermatologist Dr Arnold Klein, also claimed Michael "faked medical issues" so her could receive stronger painkillers and "demanded enough to knock out an elephant."
He added: "Michael had a death wish with his drug addiction.
"He faked medical issues so that he could receive heavy-duty painkiller Demerol. Michael felt he was immune to normal volumes and begged for extra quantities."
Michael's mother Katherine Jackson, 82, who acts as a guardian for his children Prince Michael, 16, Paris, 15, and Blanket, 11, is currently involved in a $40 million wrongful death lawsuit against AEG Live, accusing the concert promoter of being responsible for negligently hiring Conrad to care for Michael as he prepared for his gigs in London.
The trial is expected to last up to three months.