The 33 year-old, who suffered a second career loss at the hands of Haye, took several minutes to get up off the floor after shipping a massive right hand and was administered oxygen by medics once he did come round.
Doctors at ringside decided it was best if de Mori was checked over upon leaving the arena after being concussed by Haye’s powerful and overwhelming onslaught just over two minutes into the ten-round encounter.
Haye, 35, put himself firmly back in contention for world honours with the victory and should go straight into the WBA top fifteen for his troubles as de Mori was ranked at number ten himself before the bout.
That means Haye could conceivably fight for the WBA title in a late summer outing if the winners of either Ruslan Chagaev v Lucas Browne or Tyson Fury v Wladimir Klitschko were willing to pick the Londoner out as their voluntary defence.
A crowd of 16,000 fans witnessed Haye’s triumphant return to boxing on the back of 1281 days out of action, although for de Mori there are now solid question marks about his future in the sport.