All depends who lands first. I think although Hide's pretty quick, I think Haye would land earliest. This could be over inside a round.
haye KO but if herbie landed its lights out for haye. remember herbie was a very small heavyweight and was KO'd by huge guys like riddick bowe and vitali klit. haye hasnt ever fought guys with that power.
Both have Glass Jaws but Hide was KOed by the wind of Vitali Klitschko's punches. That is a bad Glass Jaw. Haye by KO in 3 or 4.
Haye beats the current Hide early. Prime Hide vs Haye is 50:50. Hide was fast and a very good puncher in his prime, a bad combination for Haye who relies on being faster than his opponent.
Guaranteed Herbie Hide inside 5 rounds! Haye is a looser with no defence and no chin. Hide is much harder puncher with a glass chin. But still I favor Hide to win via KO.