If anyone could pull him out of retirement it would be Don King. He holds the promotional rights for Tyson Holy 3 and thats why the fight never came off when Tyson was still active towards the end of his career.
King yanked Larry Holmes off the road of his touring band to get him to fight Tyson on three months notice, so Im sure King could get Tyson to comeback if he offers him enough cash.
Its like saying you wouldnt tune in to see Roy Jones fight Bernard Hopkins. Cmon, everyone would. They're both old and both legends, so anything could happen, but as someone said, Tyson doesnt seem to have any interest in fighting so if he shows up to act as a punching bag for Holyfield that would be sad.