No, Harrison hyped himself and no one except for some mug at the BBC fell for it. Have a look at the Bonin fight. If Haye is thin framed you've been watching teletubbies too long.
Haye is 6'3 with an 81" reach. He already looks fine at 217 pounds. Haye doesn't need to add any weight apart from his legs. His legs alone need a few pounds and at 225 or so he'll be fine at the weight.